CN117639877A - Signal relay forwarding method and communication device - Google Patents
Signal relay forwarding method and communication device Download PDFInfo
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Abstract
The application provides a signal relay forwarding method and a communication device, wherein the method comprises the following steps: the relay device receives first information from the network device, the first information being used to configure a first nominal gain and at least one gain adjustment parameter, the at least one gain adjustment parameter comprising a gain offset and/or a scaling factor. The relay device receiving second information from the network device, the second information being indicative of one or more of the at least one gain adjustment parameters; the relay equipment determines relay forwarding gain according to the first information and the second information; the relay device forwards the signal from the network device or the terminal device according to the relay forwarding gain. The reliability of signal relay forwarding can be improved.
Description
Technical Field
The present application relates to the field of communications, and more particularly, to a signal relay forwarding method and a communication apparatus.
Background
In a mobile communication system, it is proposed to assist communication between a network device and a terminal device by a relay device to improve network coverage, cell edge throughput, and the like. The relay device may receive the signal from the network device and amplify the received signal and forward the amplified signal to the terminal device, and the relay device may receive the signal from the terminal device and amplify the received signal and forward the amplified signal to the network device.
However, if the gain of the relay device for signal amplification is small, the effect of improving coverage by relay forwarding may not be achieved. If the gain of the relay device to the signal amplification is too high, interference may be caused to communication signals of other communication devices, and the relay power amplifier may enter a saturation region and the forwarded signal may be distorted, so that the receiving end cannot demodulate correctly. How to control a relay device to perform relay forwarding by adopting a proper relay forwarding gain in a mobile communication system is a problem to be solved at present.
Disclosure of Invention
The embodiment of the application provides a signal relay forwarding method and a communication device, which can improve the reliability of signal relay forwarding.
In a first aspect, a signal relay forwarding method is provided, which may be performed by a relay device or a module (e.g. a chip) configured in (or for) the relay device.
The method comprises the following steps: the relay device receives first information from the network device, the first information being used to configure a first nominal gain and at least one gain adjustment parameter, the at least one gain adjustment parameter comprising a gain offset and/or a scaling factor; the relay device receiving second information from the network device, the second information being indicative of one or more of the at least one gain adjustment parameters; the relay equipment determines relay forwarding gain according to the first information and the second information; the relay device forwards the signal from the network device or the terminal device according to the relay forwarding gain.
According to the scheme, the network equipment can configure the relay equipment with the relay equipment through the first information to determine the relevant parameters of the relay forwarding gain, and then indicate the parameter values for adjusting the relay forwarding gain through the second information, so that the network equipment can adaptively control the relay forwarding gain of the relay equipment according to the forwarding signal, and the reliability of signal forwarding is improved.
With reference to the first aspect, in certain implementations of the first aspect, the at least one gain adjustment parameter includes a gain offset, the first information configures at least one gain offset, the second information indicates a first gain offset of the at least one gain offset, and the first gain offset is used to determine the relay forwarding gain.
According to the scheme, the network device can configure at least one candidate gain offset for the relay device, and indicate the gain offset to the relay device through the second information according to the channel state, so that the relay forwarding gain determined by the relay device based on the gain offset can meet the transmission requirement.
With reference to the first aspect, in certain implementations of the first aspect, the at least one gain adjustment parameter includes a scaling factor, the first information configures the at least one scaling factor, the second information is used to indicate a first scaling factor of the at least one scaling factor, and a product of the first scaling factor and the first nominal gain is used to determine the relay forwarding gain.
According to the scheme, the network equipment can configure at least one candidate expansion factor for the relay equipment, and indicate the expansion factor to the relay equipment through the second information according to the channel state, so that the configured first nominal gain can be adaptively adjusted according to the transmission requirement, the transmission requirement is met, and the reliability of relay forwarding is improved.
With reference to the first aspect, in certain implementations of the first aspect, the first information is used to configure at least one gain adjustment parameter set, each gain adjustment parameter set includes a gain offset and/or a scaling factor, the second information is used to indicate a first gain adjustment parameter set in the at least one gain adjustment parameter set, where the first gain adjustment parameter set includes a first gain offset, and the relay forwarding gain is determined according to the first gain offset; and/or the first set of gain adjustment parameters includes a first scaling factor, the product of the first scaling factor and the first nominal gain being used to determine the relay forwarding gain.
According to the scheme, the first information configures a plurality of gain adjustment parameter sets containing gain offset and/or expansion factors in a mode of the gain adjustment parameter sets, one gain adjustment parameter set is indicated through the second information, the relay device can determine relay forwarding gain based on the gain offset and/or expansion factors contained in the gain adjustment parameter sets, flexibility of the gain adjustment parameter indication can be improved, and signaling overhead of the second information is reduced.
With reference to the first aspect, in certain implementation manners of the first aspect, the first information is used to configure a first correspondence, at least one gain adjustment parameter set in the first correspondence corresponds to at least one relay beam, the gain adjustment parameter set includes a gain offset and/or a scaling factor, and the method further includes: the relay device determines a first set of gain adjustment parameters corresponding to a first relay beam in the first correspondence, and the signal from the network device or the terminal device is forwarded over the first relay beam.
According to the scheme, the network equipment configures the corresponding gain adjustment parameter set for at least one relay beam of the relay equipment through the first information, so that the relay equipment can determine the corresponding relay forwarding gain of the relay beam according to the relay beam adopted by the forwarding signal, the relay forwarding gain is adapted to the relay beam, and the reliability of signal forwarding is improved.
With reference to the first aspect, in certain implementation manners of the first aspect, the first information is used to configure a second correspondence, at least one gain adjustment parameter set in the second correspondence corresponds to at least one signal, the gain adjustment parameter set includes a gain offset and/or a scaling factor, the at least one signal includes an uplink signal and/or a downlink signal, and the method further includes: the relay device determines a first set of gain adjustment parameters corresponding to a first signal in the second correspondence, the signal from the network device or the terminal device being the first signal.
According to the scheme, the relay forwarding gain is adapted to different signals, the accurate control of the relay forwarding gain is realized, and the reliability of signal forwarding is improved.
With reference to the first aspect, in certain implementations of the first aspect, the second information is used to indicate a first gain control adjustment amount, and the first gain control adjustment amount is used to determine a relay forwarding gain.
With reference to the first aspect, in certain implementations of the first aspect, the method further includes:
the terminal equipment adopts a gain adjustment quantity accumulation mode to determine a relay forwarding gain, wherein the relay forwarding gain is determined according to a plurality of gain control adjustment quantity accumulation quantities, and the plurality of gain control adjustment quantities comprise the first gain control adjustment quantity.
With reference to the first aspect, in certain implementations of the first aspect, the at least one gain adjustment parameter includes an accumulation mode enable parameter, the accumulation mode enable parameter being used to configure an accumulation mode that enables or disables the gain control adjustment amount, the second information being used to indicate the first gain control adjustment amount.
In one embodiment, if the accumulation mode enable parameter configuration enables the accumulation mode of the gain control adjustment amounts, the accumulation amounts of a plurality of gain control adjustment amounts are used to determine the relay gain, and the plurality of gain control adjustment amounts include the first gain control adjustment amount.
In another embodiment, the first gain control adjustment is used to determine the relay gain if the accumulation mode enable parameter configuration does not enable the accumulation mode of the gain control adjustment.
According to the scheme, the network device can configure whether the accumulation mode of the gain control adjustment quantity is enabled or not for the relay device through the first information, so that the relay device can determine whether the gain control adjustment quantity indicated by the second information is accumulated or not based on the configuration, and the accuracy of the relay forwarding gain control of the relay device by the network device is improved.
With reference to the first aspect, in certain implementations of the first aspect, the second information is used to indicate a first error vector magnitude, EVM, gain adjustment amount, the first EVM gain adjustment amount being used to determine the relay forwarding gain.
With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the relay device determines a first EVM gain adjustment amount corresponding to a modulation mode of the signal from the network device or the terminal device; wherein the first EVM gain adjustment amount is used to determine the relay forwarding gain.
With reference to the first aspect, in certain implementations of the first aspect, the at least one gain adjustment parameter includes an EVM gain adjustment amount enable parameter for configuring the EVM gain adjustment amount to be enabled or disabled,
The first EVM gain adjustment amount is used to determine the relay forwarding gain in the event that the EVM gain adjustment amount enable parameter configuration enables EVM gain adjustment.
With reference to the first aspect, in certain implementations of the first aspect, the second gain adjustment parameter configuration enables EVM gain adjustment, and the method further includes: the relay device determines a first EVM gain adjustment amount corresponding to a modulation mode of the signal from the network device or the terminal device; wherein the first EVM gain adjustment amount is used to determine a relay forwarding gain.
According to the scheme, under the condition that EVM gain adjustment is enabled, the relay equipment can adaptively adjust the relay forwarding gain based on the modulation mode, so that the relay forwarding gain can meet the transmission requirement, and the reliability of relay forwarding is improved.
With reference to the first aspect, in some implementations of the first aspect, the second information is used to indicate an uplink gain adjustment amount, where a transmit beam used for uplink relay forwarding and a receive beam used for downlink relay forwarding are the same beam, and/or where a receive beam used for uplink relay forwarding and a transmit beam used for downlink relay forwarding are the same beam, the uplink gain adjustment amount is used to determine the relay forwarding gain.
With reference to the first aspect, in certain implementations of the first aspect, the at least one gain adjustment parameter includes an uplink gain adjustment amount enable parameter, which is used to configure enable or disable the uplink gain adjustment amount. If the uplink gain adjustment amount enabling parameter configures an enabling uplink gain adjustment amount, the second information is used to indicate the uplink gain adjustment amount, and/or if the transmission beam adopted by the uplink relay forwarding and the reception beam adopted by the downlink relay forwarding are the same beam, the uplink gain adjustment amount is used to determine the relay forwarding gain.
According to the scheme, the network equipment can enable the relay equipment to adjust the uplink relay forwarding gain based on the downlink relay forwarding gain, and compared with a mode that the uplink and the downlink respectively indicate adjustment amounts, the signaling overhead can be reduced.
With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the relay device receives third information, wherein the third information is used for indicating a second nominal gain, and the second nominal gain is an updated nominal gain; and the relay device determines a relay forwarding gain according to the second nominal gain.
According to the scheme, the dynamic adjustment of the nominal gain can adapt to the change of the back-transmission side channel and/or the access side channel, the amplification gain of the relay can be adjusted in real time, the transmission performance can be improved, and the relay saturation caused by the overlarge relay forwarding gain is prevented.
With reference to the first aspect, in certain implementations of the first aspect, the first information is carried in a radio resource control RRC message, and the third information is carried in a radio medium access control MAC control element CE or downlink control information DCI.
In a second aspect, a signal relay forwarding method is provided, which may be performed by a network device or a module (e.g. a chip) configured in (or for) the network device.
The method comprises the following steps: the network device sends first information to the relay device, wherein the first information is used for configuring a first nominal gain and at least one gain adjustment parameter, and the at least one gain adjustment parameter comprises a gain offset and/or a telescopic factor; the network device sends second information to the relay device, the second information indicating one or more of the at least one gain adjustment parameters.
In a third aspect, a communications apparatus is provided, where the apparatus can include modules, either hardware circuitry or software, or a combination of hardware circuitry and software implementation, that perform the methods/operations/steps/actions described in the first aspect. In one design, the apparatus includes: a transceiver unit for receiving first information from a network device, the first information being used for configuring a first nominal gain and at least one gain adjustment parameter, the at least one gain adjustment parameter comprising a gain offset and/or a scaling factor; the transceiver unit is further configured to receive second information from the network device, the second information being configured to indicate one or more of the at least one gain adjustment parameter; the processing unit is used for determining relay forwarding gain according to the first information and the second information; the transceiver unit is further configured to forward the signal from the network device or the terminal device according to the relay forwarding gain.
With reference to the third aspect, in certain implementations of the third aspect, the at least one gain adjustment parameter includes a gain offset, the first information configures at least one gain offset, the second information indicates a first gain offset of the at least one gain offset, and the first gain offset is used to determine the relay forwarding gain.
With reference to the third aspect, in certain implementations of the third aspect, the at least one gain adjustment parameter includes a scaling factor, the first information is configured with the at least one scaling factor, the second information is used to indicate a first scaling factor of the at least one scaling factor, and a product of the first scaling factor and the first nominal gain is used to determine the relay forwarding gain.
With reference to the third aspect, in certain implementations of the third aspect, the first information is used to configure at least one gain adjustment parameter set, each gain adjustment parameter set includes a gain offset and/or a scaling factor, the second information is used to indicate a first gain adjustment parameter set in the at least one gain adjustment parameter set, where the first gain adjustment parameter set includes a first gain offset, and the first gain offset is used to determine the relay forwarding gain; and/or the first gain adjustment parameter set includes a first scaling factor, a product of the first scaling factor and the first nominal gain being used to determine the relay forwarding gain.
With reference to the third aspect, in some implementations of the third aspect, the first information is used to configure a first correspondence, at least one gain adjustment parameter set in the first correspondence corresponds to at least one relay beam, the gain adjustment parameter set includes a gain offset and/or a scaling factor, and the processing unit is further configured to determine a first gain adjustment parameter set corresponding to a first relay beam in the first correspondence, where the signal from the network device or the terminal device is forwarded through the first relay beam.
With reference to the third aspect, in some implementations of the third aspect, the first information is used to configure a second correspondence, at least one gain adjustment parameter set in the second correspondence corresponds to at least one signal, the gain adjustment parameter set includes a gain offset and/or a scaling factor, the at least one signal includes an uplink signal and/or a downlink signal, and the processing unit is further configured to determine a first gain adjustment parameter set corresponding to a first signal in the second correspondence, where the signal from the network device or the terminal device is the first signal.
With reference to the third aspect, in some implementations of the third aspect, the second information is used to indicate a first gain control adjustment amount, and the first gain control adjustment amount is used to determine the relay forwarding gain.
With reference to the third aspect, in certain implementations of the third aspect, the method further includes:
the terminal equipment adopts a gain adjustment quantity accumulation mode to determine a relay forwarding gain, wherein the relay forwarding gain is determined according to a plurality of gain control adjustment quantity accumulation quantities, and the plurality of gain control adjustment quantities comprise the first gain control adjustment quantity.
With reference to the third aspect, in some implementations of the third aspect, the at least one gain adjustment parameter includes an accumulation mode enable parameter, the accumulation mode enable parameter is used to configure an accumulation mode that enables or disables a gain control adjustment amount, the second information is used to indicate a first gain control adjustment amount, if the accumulation mode enable parameter configures the accumulation mode that enables the gain control adjustment amount, an accumulation amount of a plurality of gain control adjustment amounts is used to determine the relay forwarding gain, and the plurality of gain control adjustment amounts includes the first gain control adjustment amount; or if the accumulation mode enabling parameter configuration does not enable the accumulation mode of the gain control adjustment amount, the first gain control adjustment amount is used for determining the relay forwarding gain.
With reference to the third aspect, in some implementations of the third aspect, the second information is used to indicate a first EVM gain adjustment amount, which is used to determine a relay forwarding gain.
With reference to the third aspect, in certain implementations of the third aspect, the method further includes: the relay device determines a first EVM gain adjustment amount corresponding to a modulation mode of the signal from the network device or the terminal device; wherein the first EVM gain adjustment amount is used to determine the relay forwarding gain.
With reference to the third aspect, in certain implementations of the third aspect, the at least one gain adjustment parameter includes an EVM gain adjustment amount enable parameter, the EVM gain adjustment amount enable parameter being used to configure an enable or disable EVM gain adjustment amount, the first EVM gain adjustment amount being used to determine the relay forwarding gain in the event that the EVM gain adjustment is enabled by the EVM gain adjustment amount enable parameter configuration.
With reference to the third aspect, in some implementations of the third aspect, the EVM gain adjustment amount enabling parameter configuration enables EVM gain adjustment, and the processing unit further determines a first EVM gain adjustment amount corresponding to the first modulation mode; the first EVM gain adjustment amount is used for determining the relay forwarding gain, and the modulation mode of the signal is a first modulation mode.
With reference to the third aspect, in some implementations of the third aspect, the second information is used to indicate an uplink gain adjustment amount, where a transmit beam used for uplink relay forwarding and a receive beam used for downlink relay forwarding are the same beam, and/or where a receive beam used for uplink relay forwarding and a transmit beam used for downlink relay forwarding are the same beam, the uplink gain adjustment amount is used to determine the relay forwarding gain.
With reference to the third aspect, in some implementations of the third aspect, the at least one gain adjustment parameter includes an uplink gain adjustment amount enabling parameter, where the uplink gain adjustment amount enabling parameter is used to configure an enabling or disabling uplink gain adjustment amount, and if the uplink gain adjustment amount enabling parameter is configured to enable the uplink gain adjustment amount, the second information is used to indicate the uplink gain adjustment amount, where a transmission beam adopted by the uplink relay forwarding is the same beam as a reception beam adopted by the downlink relay forwarding, and/or where the reception beam adopted by the uplink relay forwarding is the same beam as the transmission beam adopted by the downlink relay forwarding, the uplink gain adjustment amount is used to determine the relay forwarding gain.
With reference to the third aspect, in certain implementations of the third aspect, the transceiver unit is further configured to receive third information, where the third information is used to indicate a second nominal gain, and the second nominal gain is an updated nominal gain; the processing unit is further configured to determine a relay forwarding gain based on the second nominal gain.
With reference to the third aspect, in certain implementations of the third aspect, the first information is carried in a radio resource control RRC message, and the third information is carried in a radio medium access control MAC control element CE or downlink control information DCI.
In a fourth aspect, a communications apparatus is provided, where the apparatus can include means for performing the method/operation/step/action described in the second aspect, where the means can be implemented in hardware circuitry, software, or a combination of hardware circuitry and software. In one design, the apparatus includes: a transceiver unit configured to send first information to the relay device, where the first information is used to configure a first nominal gain and at least one gain adjustment parameter, and the at least one gain adjustment parameter includes a gain offset and/or a scaling factor; a processing unit for determining second information for indicating one or more of the at least one gain adjustment parameters; the transceiver unit is further configured to send second information to the relay device.
In a fifth aspect, a communication device is provided that includes a processor. The processor may implement the method of the first aspect and any one of the possible implementations of the first aspect. Optionally, the communications apparatus further comprises a memory, the processor coupled to the memory and operable to execute instructions in the memory to implement the method of the first aspect and any possible implementation of the first aspect. Optionally, the communication device further comprises a communication interface, and the processor is coupled to the communication interface. In the embodiments of the present application, the communication interface may be a transceiver, a pin, a circuit, a bus, a module, or other types of communication interfaces, without limitation.
In one implementation, the communication device is a relay device. When the communication apparatus is a relay device, the communication interface may be a transceiver, or an input/output interface.
In another implementation, the communication device is a chip configured in a relay device. When the communication device is a chip configured in a terminal apparatus, the communication interface may be an input/output interface.
Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input/output interface may be an input/output circuit.
In a sixth aspect, a communication device is provided that includes a processor. The processor may implement the method of the second aspect described above and any one of the possible implementations of the second aspect. Optionally, the communications apparatus further comprises a memory, the processor being coupled to the memory and operable to execute instructions in the memory to implement the method of the second aspect and any one of the possible implementations of the second aspect. Optionally, the communication device further comprises a communication interface, and the processor is coupled to the communication interface.
In one implementation, the communication apparatus is a network device. When the communication apparatus is a network device, the communication interface may be a transceiver, or an input/output interface.
In another implementation, the communication device is a chip configured in a network device. When the communication device is a chip configured in the first network apparatus, the communication interface may be an input/output interface.
Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input/output interface may be an input/output circuit.
In a seventh aspect, there is provided a processor comprising: input circuit, output circuit and processing circuit. The processing circuit is configured to receive a signal via the input circuit and transmit a signal via the output circuit, such that the processor performs the first or second aspect and the method in any one of the possible implementations of the first or second aspect.
In a specific implementation process, the processor may be one or more chips, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, various logic circuits, and the like. The input signal received by the input circuit may be received and input by, for example and without limitation, a receiver, the output signal may be output by, for example and without limitation, a transmitter and transmitted by a transmitter, and the input circuit and the output circuit may be the same circuit, which functions as the input circuit and the output circuit, respectively, at different times. The embodiments of the present application do not limit the specific implementation manner of the processor and the various circuits.
In an eighth aspect, there is provided a computer program product comprising: a computer program (which may also be referred to as code, or instructions) which, when executed, causes a computer to perform the method of the first or second aspect and any one of the possible implementations of the first or second aspect.
In a ninth aspect, there is provided a computer readable storage medium storing a computer program (which may also be referred to as code, or instructions) which, when run on a computer, causes the computer to perform the method of the first or second aspect and any one of the possible implementations of the first or second aspect.
In a tenth aspect, a communication system is provided, comprising at least one relay device and at least one network device as described above. Optionally, the communication system further comprises at least one terminal device.
Drawings
Fig. 1 is a schematic diagram of a communication system provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a relay amplification principle provided in an embodiment of the present application;
FIG. 3 is a schematic flow chart of a signal relay forwarding method provided in an embodiment of the present application;
Fig. 4 is another schematic flowchart of a signal relay forwarding method provided in an embodiment of the present application;
fig. 5 is a schematic diagram of determining relay forwarding power information according to an embodiment of the present application;
fig. 6 is another schematic diagram of determining relay forwarding power information provided in an embodiment of the present application;
fig. 7 to 9 are other schematic flowcharts of the signal relay forwarding method provided in the embodiment of the present application;
FIG. 10 is a schematic block diagram of an example of a communication device provided in an embodiment of the present application;
fig. 11 is a schematic structural diagram of an example of a terminal device provided in the embodiment of the present application;
fig. 12 is a schematic block diagram of an example of a network device according to an embodiment of the present application.
Detailed Description
The technical solutions in the present application will be described below with reference to the accompanying drawings.
In the embodiment of the present application, "/" may indicate that the associated object is an "or" relationship, for example, a/B may indicate a or B; "and/or" may be used to describe that there are three relationships associated with an object, e.g., a and/or B, which may represent: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural. In order to facilitate description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", etc. may be used to distinguish between technical features that are the same or similar in function. The terms "first," "second," and the like do not necessarily denote any order of quantity or order of execution, nor do the terms "first," "second," and the like. In this application embodiment, the terms "exemplary" or "such as" and the like are used to denote examples, illustrations, or descriptions, and any embodiment or design described as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. The use of the word "exemplary" or "such as" is intended to present the relevant concepts in a concrete fashion to facilitate understanding.
The technical solution of the embodiment of the application can be applied to various communication systems, for example: the embodiments of the present application are not limited to long term evolution (long term evolution, LTE) systems, fifth generation (5th generation,5G) communication systems, such as a 5G New Radio (NR) system, etc., and future communication systems (such as a sixth generation (6th generation,6G) communication system), or a system in which multiple communication systems are integrated.
Fig. 1 is a schematic architecture diagram of a communication system 100 to which embodiments of the present application apply. The communication system 100 comprises at least one network device and at least one terminal device, such as the network device and the terminal device shown in fig. 1, and the communication system 100 further comprises at least one relay device, such as the relay device shown in fig. 1, which may facilitate communication between the network device and the terminal device. The relay device may be formed of a plurality of antennas (or antenna panels), wherein a part of the antennas are backhaul link side antennas for communication with the network device through backhaul links, and another part of the antennas are access link side antennas for communication with the terminal device through access links. The relay device can perform downlink amplification and forwarding, the network device sends downlink signals through the backhaul link, the relay device amplifies received signals received by the backhaul link and forwards the amplified received signals to the terminal device at the access link, and accordingly, the terminal device receives the downlink signals forwarded by the relay device at the access link. The relay device can also amplify and forward the uplink signal, the terminal device sends the uplink signal through the access link, and the relay device amplifies the received signal received by the access link and forwards the amplified signal to the network device in the return link. In a mobile communication system, a relay device may be referred to as a network control relay (network controlled repeater, NCR).
Fig. 2 is a schematic diagram of the remote of the relay device amplifying the forwarded signal. As shown in fig. 2, the power is P NCR,Rx Is superimposed with noise power P in the link NCR,n Is input into the amplifier after noise, and the amplification gain of the amplifier is G NCR Amplified by an amplifier to obtain power P NCR,Tx Is transmitted by the base station. Amplified signal power P NCR,Tx The method meets the following conditions:
in the application, the relay device can be used in a communication network of multi-hop relay cascade, that is, the relay node can establish connection with the network device through at least one upper-level relay node and receive control of the network device, and at this time, the upper-level relay node can be regarded as a special network device; or the relay node may establish a connection with the terminal device through at least one next-stage relay node, where the next-stage relay node may be regarded as a special terminal device.
The network device provided by the embodiment of the application may be a device with a wireless receiving and transmitting function, and the network device may be a wireless access network device, where the wireless access network device is an access device that a terminal accesses to a communication system in a wireless manner. The radio access network device may be a base station (base station), an evolved NodeB (eNodeB), a transmission and reception point (transmission reception point, TRP), a next generation NodeB (gNB) in a fifth generation (5th generation,5G) mobile communication system, a next generation base station in a sixth generation (6th generation,6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc.; the present invention may also be a module or unit that performs a function of a base station part, for example, a Central Unit (CU) or a Distributed Unit (DU). The CU can complete the functions of a radio resource control protocol and a packet data convergence layer protocol (packet data convergence protocol, PDCP) of the base station and can also complete the functions of a service data adaptation protocol (service data adaptation protocol, SDAP); the DU performs the functions of the radio link control layer and the medium access control (medium access control, MAC) layer of the base station, and may also perform the functions of a part of the physical layer or the entire physical layer, and for a detailed description of the above protocol layers, reference may be made to the relevant technical specifications of the third generation partnership project (3rd generation partnership project,3GPP). The radio access network device may be a macro base station (e.g., 110a in fig. 1), a micro base station, an indoor station (e.g., 110b in fig. 1), or the like. The embodiment of the application does not limit the specific technology and the specific device form adopted by the network device.
The terminal device provided by the embodiment of the application may be a device with a wireless transceiver function, and may send signals to a base station or receive signals from the base station. The terminal device may also be referred to as a terminal, user Equipment (UE), mobile station, mobile terminal, etc. The terminal may be widely applied to various scenes, for example, device-to-device (D2D), vehicle-to-device (vehicle to everything, V2X) communication, machine-type communication (MTC), internet of things (internet of things, IOT), virtual reality, augmented reality, industrial control, autopilot, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, and the like. The terminal can be a mobile phone, a tablet personal computer, a computer with a wireless receiving and transmitting function, a wearable device, a vehicle, an airplane, a ship, a robot, a mechanical arm, intelligent household equipment and the like. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the terminal.
In the embodiment of the present application, the functions of the network device may be performed by modules (such as chips) in the network device, or may be performed by a control subsystem that includes the functions of the network device. The control subsystem including the network device function may be a control center in the above application scenarios such as smart grid, industrial control, intelligent transportation, and smart city. The functions of the terminal device may be performed by a module (e.g., a chip or a modem) in the terminal device, or may be performed by an apparatus including the functions of the terminal device. The functions of the relay device may be performed by a module (e.g., a chip or a modem) in the relay device, or may be performed by an apparatus including the functions of the relay device.
Aiming at the problem of how to control relay equipment to perform relay forwarding by adopting proper relay forwarding gain, the embodiment of the application provides a relay forwarding method, wherein network equipment configures nominal gain and at least one medium gain adjustment parameter for the relay equipment, the network equipment indicates the parameter value of one or more gain adjustment parameters in the configured at least one gain adjustment parameter to the relay equipment, and the relay equipment determines the relay forwarding gain based on the nominal gain and the parameter value indicated by the network equipment, so that signal forwarding between the network equipment and terminal equipment is performed based on the relay forwarding gain. The relay equipment can forward the signal with proper relay forwarding gain, and the reliability of signal forwarding is improved.
Fig. 3 is a schematic flow chart of a signal relay forwarding method 300 provided in an embodiment of the present application. The relay forwarding method 300 may include, but is not limited to, the following steps:
s301, the network device sends first information to the relay device, the first information being used to configure a first nominal gain and at least one gain adjustment parameter, the at least one gain adjustment parameter comprising a gain offset and/or a scaling factor.
Accordingly, the relay device receives the first information from the network device. As an example and not by way of limitation, the first information may be a radio resource control (radio resource control, RRC) message.
The nominal (nominal) gain may be referred to as a nominal amplification gain or a reference amplification gain. The network device configures a first nominal gain for the relay device through the first information, so that the relay device performs gain adjustment on the basis of the first nominal gain to obtain a relay forwarding gain.
For example, the first information may include relay gain configuration information, e.g., the relay gain configuration information may be denoted as RepeaterGainConfig or GainConfig, the relay gain configuration information may include configuration information of a Nominal gain, e.g., the configuration information of the Nominal gain may be denoted as g0-Nominal, and the format of the first information may be expressed as follows:
RepeaterGainConfig::＝SEQUENCE{
g0-Nomimal INTEGER(X1…Y1)OPTIONAL
…}
wherein INTEGREEN (X1 … Y1) represents a nominal gain (g 0-Nomimal) having a value ranging from an INTEGER of X1 to Y1, X1 < Y1, and for example, X1 may be 20 and Y1 may be 80, but the present application is not limited thereto. The first information indicates a value within a range of values of the nominal gain, i.e., the first nominal gain. OPTIONAL indicates that g0-Nomimal may be an OPTIONAL configuration parameter. The above exemplarily illustrates the manner in which the first information configures the nominal gain, wherein "…" indicates that the first information may also include other information as illustrated.
The at least one gain adjustment parameter may comprise a gain offset delta and/or a scaling factor alpha, and the at least one gain adjustment parameter may comprise a gain offset, the first information configuring the at least one gain offset. The at least one gain adjustment parameter may include a scaling factor, the first information configuring at least one gain offset.
In one embodiment, the first information is used to configure at least one gain adjustment parameter set comprising a gain offset and/or a scaling factor.
For example, the gain adjustment parameter set may be referred to as a gain-scaling factor set, and illustratively, configuration information for configuring the gain-scaling factor set in the first information may be denoted as G0-NCR-AlphaSet, gain adjustment amount configuration information may be denoted as G0, scaling factor configuration information may be denoted as alpha, and the G0-NCR-AlphaSet may be expressed as follows:
G0-NCR-AlphaSet::＝SEQUENCE{
g0-NCR-AlphaSetId G0-NCR-AlphaSetId，
g0 INTEGER(X2…Y2) OPTIONAL,
alpha ENUMERATED{alpha0,alpha04,alpha05,alpha06,alpha07,alpha08,alpha09,alpha1}OPTIONAL
…
}
the network device may configure a gain adjustment parameter set through G0-NCR-AlphaSet in the first information, wherein an Identifier (ID) of the gain adjustment parameter set may be configured through G0-NCR-AlphaSetId, and a gain adjustment amount Δ in the gain adjustment parameter set may be configured through G0, the gain adjustment amount may have a value ranging from X2 to Y2, X2 < Y2, and X2 may be-16, and Y2 may be 15, by way of example, but the application is not limited thereto. A value may be selected from X2 to Y2 as the gain adjustment amount in the gain adjustment parameter set. The scaling factor α in the gain adjustment parameter set may be configured by alpha, and ENUMERATED means enumerating a value as the scaling factor in the gain adjustment parameter set, where alpha0x means that the scaling factor has a value of 0.X, for example, alpha05 means that the scaling factor has a value of 0.5. G0 and alpha are both OPTIONAL (OPTIONAL) configurations as shown above, and thus, one set of gain parameters may include only the gain adjustment amount, or only the scaling factor, or both the gain adjustment amount and the scaling factor.
In the embodiment of the present application, specific values of all parameters are examples, and may be other values in practice, and may be set according to specific implementation conditions, which is not limited in this application.
The relay gain configuration information in the first information may refer to one or more gain adjustment parameter sets through an identification of the gain adjustment parameter set, and the relay gain configuration information may be represented as follows, for example:
RepeaterGainConfig::＝SEQUENCE{
g0-Nomimal INTEGER(X1…Y1) OPTIONAL
g0-AlphaSets SEQUENCE(SIZE(1..maxNrofG0-NCR-AlphaSets))OF G0-NCR-AlphaSet OPTIONAL
…,
}
wherein maxNrofG0-NCR-AlphaSets represent the maximum value of the gain adjustment parameter sets that the first information can configure, and the number of gain adjustment parameter sets that the network device can configure through the first information is smaller than maxNrofG0-NCR-AlphaSets. And the relay gain configuration information refers to the gain adjustment parameter set corresponding to the identification through the identification g0-NCR-alpha SetId of the gain adjustment parameter set.
In S302, the network device may instruct, by using the second information, the identifier of one gain adjustment parameter set, notify the relay device of the gain adjustment amount (if included) and the scaling factor (if included) included in the gain adjustment parameter set corresponding to the identifier configured by the first information, and determine the relay forwarding gain.
Optionally, the at least one gain adjustment parameter further comprises an accumulated mode enable parameter for configuring the enabled or disabled gain control adjustment amount δ NCR Is a cumulative manner of the above.
The accumulation mode enabling parameter may be referred to as a Gain Control (GC) accumulation parameter, but the present application is not limited thereto.
In a first embodiment, the accumulation mode enabling parameter is used for configuring an accumulation mode that does not enable the gain control adjustment amount, the accumulation mode enabling parameter is an optional configuration parameter, and when the first information does not include the accumulation mode enabling parameter, the accumulation mode enabling parameter indicates that the gain control adjustment amount is enabled.
Illustratively, the Accumulation mode enable parameter may be denoted as gc-Accumulation, which may be expressed as follows:
gc-Accumulation ENUMERATED{disabled} OPTIONAL
wherein, "disabled" indicates not enabled, and if the first information includes the optional configuration gc-accounting, the configuration enumerates "disabled" and informs the relay device that the Accumulation mode of the gain control adjustment amount is not enabled. If the first information does not include the optional configuration gc-accounting, the relay device may determine a cumulative manner in which the gain control adjustment amount is enabled.
In the second embodiment, the accumulation mode enabling parameter is used to configure an accumulation mode for enabling the gain control adjustment amount, the accumulation mode enabling parameter is an optional configuration parameter, and when the first information does not include the accumulation mode enabling parameter, it indicates that the gain control adjustment amount is not enabled.
Illustratively, the Accumulation mode enable parameter may be denoted as gc-Accumulation, which may be expressed as follows:
gc-Accumulation ENUMERATED{enabled} OPTIONAL
wherein, "enabled" indicates enabled, and if the first information includes the optional configuration gc-accounting, the configuration enumerates "enabled", and informs the relay device of enabling the accumulating mode of the gain control adjustment amount. If the first information does not include the optional configuration gc-accounting, the relay device may determine that the Accumulation mode of the gain control adjustment amount is not enabled.
In the third embodiment, the accumulation mode enabling parameter is used to configure an accumulation mode that enables or disables the gain control adjustment amount.
Illustratively, the Accumulation mode enable parameter may be denoted as gc-Accumulation, which may be expressed as follows:
gc-Accumulation ENUMERATED{disabled，enabled}
the first information includes gc-accounting, and if the configuration enumerates "enabled", the Accumulation mode of enabling the gain control adjustment amount is represented; if the configuration enumerates "disabled", this indicates that the accumulation mode of gain control adjustment amounts is not enabled.
The relay device may determine whether to enable the accumulation mode of the gain control adjustment amount according to the accumulation mode enabling parameter, so as to accumulate the gain control adjustment amount when determining the relay forwarding gain.
Optionally, the at least one gain adjustment parameter further comprises an error vector magnitude (error vector magnitude, EVM) gain adjustment amount enable parameter for configuring the EVM gain adjustment amount to be enabled or disabled.
The EVM gain adjustment amount enabling parameter may be referred to as an EVM gain adjustment parameter or an EVM-aware gain adjustment parameter, and the name of the EVM gain adjustment amount enabling parameter in the implementation is not limited in this application. For the specific embodiment of the EVM gain adjustment amount enabling parameter, reference may be made to the first to third embodiments of the above-described accumulated mode enabling parameter. As an example of the second embodiment, the EVM gain adjustment amount enabling parameter may be denoted as deltaEVM, and may be expressed as follows:
deltaEVM ENUMERATED{enabled} OPTIONAL
the relay device may determine whether to enable the EVM gain adjustment amount according to the EVM gain adjustment amount enable parameter, thereby determining whether to determine a relay forwarding gain based on the EVM gain adjustment amount.
In one implementation, the relay device may send capability information to the network device, where the capability information is used to indicate that the relay device supports or does not support adjusting the gain based on the EVM, or the capability information is used to indicate that the relay device has or does not have a function of adjusting the gain based on the EVM, or the capability information is used to indicate that the relay device has the capability of adjusting the gain based on the EVM, and the function of adjusting the gain based on the EVM needs to be turned on.
For example, some relay devices do not have (or do not need) a function of adjusting gain based on EVM, while some relay devices have a function of adjusting gain based on EVM. The relay device may send capability information to the network device informing the network device whether the network device has (and/or needs to be turned on) a function of adjusting the gain based on the EVM, and the network device may enable the EVM gain adjustment amount for the relay device having the function. Or, the relay device with the function sends capability information to the network device, and notifies the network device that the relay device has (and/or needs to be turned on) a function of adjusting gain based on the EVM, so that the network device can enable the EVM gain adjustment amount for the relay device. Alternatively, a relay device that does not have this function does not send the capability information to the network device.
Further, the relay device with the function may also send the relevant parameters of the EVM adjustment to the network device, so that the network device configures the EVM gain adjustment amount for the relay device based on the relevant parameters of the EVM of the relay device.
For example, a relay device having a function of adjusting a gain based on EVM may report a value range of an EVM gain adjustment amount or a plurality of selectable values of the EVM gain adjustment amount supported by the relay device to a network device, the network device may configure the relay device with a plurality of candidate EVM gain adjustment amounts with reference to the value range or the plurality of selectable values, the network device may indicate one of the candidate EVM gain adjustment amounts through second information below, and notify the relay device to perform gain adjustment based on the EVM gain adjustment amount. The EVM gain adjustment amount reported by the relay device may refer to table 12, but the present application is not limited thereto.
Optionally, the at least one gain adjustment parameter further includes an upstream gain adjustment amount enabling parameter, which is used to configure enabling or disabling the upstream gain adjustment amount.
The uplink gain adjustment enabling parameter may be referred to as an uplink gain adjustment parameter or an uplink perceived gain adjustment parameter, and the name of the uplink gain adjustment enabling parameter in the implementation is not limited in this application. For the specific embodiment of the uplink gain adjustment amount enabling parameter, reference may be made to the first to third embodiments of the accumulation mode enabling parameter. Taking the second embodiment as an example, the uplink gain adjustment enabling parameter may be denoted as deltaUL, and may be expressed as follows:
deltaUL ENUMERATED{enabled} OPTIONAL
the relay device may determine whether to enable the EVM gain adjustment amount according to the uplink gain adjustment amount enabling parameter, thereby determining whether to determine the uplink relay forwarding gain based on the uplink gain adjustment amount and the downlink relay forwarding gain.
Optionally, the first information further includes path loss reference signal configuration information for configuring a reference signal for estimating a path loss, hereinafter referred to as a path loss reference signal.
Or, the reference signal configuration information is used for configuring a reference signal for assisting in determining the relay forwarding gain. The reference signal may also be another term, for example, a reference signal used to determine the relay forwarding gain, such as may be denoted NCR-gainrerencers.
Illustratively, the path loss reference signal configuration information may be denoted as NCR-pathloss reference rs, which may be expressed as follows:
the identifier of the path loss reference signal is configured through the NCR-pathassreference RS-Id, and in the above configuration information, the reference signal is configuration information of a selection (choicee) configuration mode, and the configuration may select one of the synchronization signal (synchronization signal, SS) and the physical broadcast channel (physical broadcast channel, PBCH) block (SS and PBCH block, SSB) and the channel state information reference signal (channel state information-reference signal, CSI-RS) as the path loss reference signal, for example, an SSB corresponding to the Index is configured through an Index SSB-Index of the SSB as the path loss reference signal, or an Index NZP-CSI-RS-resource of a CSI-RS resource corresponding to the Index is configured through non-zero power (NZP) as the path loss reference signal.
The relay gain configuration information may configure one or more path loss reference signals by referring to the path loss reference signal configuration information, for example, the relay gain configuration information may include the following configuration information:
pathlossReferenceRSToAddModList SEQUENCE(SIZE(1..maxNrofNCR-PathlossReferenceRSs))OF NCR-PathlossReferenceRS
wherein, maxNrofNCR-pathassreference rss represents the maximum number of configurable path loss reference signals.
In summary, if the first information includes the respective configuration information described above, the first information may be specifically expressed as follows:
after receiving the first information, the relay device may determine a first nominal gain according to the first information, and obtain an optional amount of the relay forwarding gain and a determination mode of the relay forwarding gain according to at least one gain adjustment parameter configured by the first information.
It should be noted that the network device may configure at least one gain adjustment parameter for the relay device through one or more pieces of information, that is, the at least one gain adjustment parameter may be carried in one or more pieces of information sent by the network device to the relay device, or the first information may be composed of one or more pieces of information sent by the network device to the relay device.
S302, the network device sends second information to the relay device, the second information being used to indicate one or more gain adjustment parameters of the at least one gain adjustment parameter.
Accordingly, the relay device receives the second information from the network device. As an example, the first information may be downlink control information (downlink control information, DCI).
S303, the relay device determines relay forwarding gain according to the first information and the second information.
The second information may indicate a first gain offset delta j The second information may indicate a first gain offset of the plurality of gain offsets if the network device is configured with the first information.
For example, the first information is further configured with an identifier of each of the plurality of gain offsets, and the second information may include an identifier of the first gain offset, and the relay device determines, after receiving the second information, the first gain offset corresponding to the identifier according to the identifier. The first gain offset is used to determine a relay forwarding gain.
As the relay device can be based on the first nominal gain G nominal And a first gain offset delta j Determining a relay forwarding gain G NCR，j Illustratively, G NCR，j Satisfies the following formula:
G NCR，j ＝G nominal +Δ j (1)
optionally, the second information may indicate the first gain offset by means of indirect indication, for example, the second information specifically indicates the first relay beam, and the relay device determines the first gain offset corresponding to the first relay beam according to the first relay beam indicated by the second information and the correspondence between the relay beam and the gain offset. The relay device forwards the signal over the first relay beam based on the relay forwarding gain determined in S303.
The second information may indicate the first relay beam by a beam index, a transmit configuration indication (transmission configuration indicator, TCI), a reference signal index, or a configured resource index. The present application is not limited thereto.
For example, the correspondence between the relay beam and the gain offset may be as shown in table 1, the second information indicates one relay beam, e.g. the second information indicates the relay beam #1, and the relay device may determine the gain offset Δ (1) corresponding to the relay beam #1, i.e. the first gain offset Δ according to the correspondence shown in table 1 j =Δ (1), relay device determines relay gain G NCR，j Including the gain offset delta (1). The relay device forwards the signal via the relay beam #1 and power amplifies the signal based on the relay forwarding gain.
TABLE 1
| Relay beam | Gain offset delta dB] |
| Beam #0 | Δ(0) |
| Beam #1 | Δ(1) |
| Beam #2 | Δ(2) |
| Beam #3 | Δ(3) |
| … | … |
The beam indicated by the second information may be a beam of the relay device on the access link side or a beam of the backhaul link side, or the second information indicates both the beam of the access link side and the beam of the backhaul link side, and the relay device determines the first gain offset according to the beam of the access link side and the beam of the backhaul link side indicated by the second information. Illustratively, the relay device may determine the gain offset according to the second information and the correspondence relationship as shown in table 3.
TABLE 2
| Backhaul link side beam | Access link side beam | Gain offset value delta [ dB ]] |
| Beam #0 | Beam # a | Δ(0) |
| Beam #1 | Beam #b | Δ(1) |
| Beam #2 | Beam #c | Δ(2) |
| Beam #3 | Beam #d | Δ(3) |
| … | … | … |
In all embodiments of the present application, a correspondence between the relay beam and the gain offset may be predefined or preconfigured by the network device, for example, the network device may configure the correspondence for the relay device through the first information or other information, and the relay device may determine the gain offset corresponding to each beam according to the configuration information. The present application is not limited in this regard.
Optionally, the second information may indicate the first gain offset indirectly by indicating a signal to be forwarded, where the signal to be forwarded includes an uplink signal and/or a downlink signal. If the second information specifically indicates the first signal, the relay device determines a first gain offset corresponding to the first signal according to a corresponding relationship between the signal and the gain offset. The first gain offset is used to determine a relay forwarding gain according to which the relay device forwards the first signal.
The first signal indicated by the second information may include, but is not limited to, one or more of an uplink channel, a downlink channel, an uplink reference signal, a downlink reference signal, uplink data, and downlink data, and may illustratively include, but is not limited to, one or more of SSB, a system message block (e.g., system message block1 (system information block, SIB 1)), a random access message (e.g., message, msg) 2, msg3, msg 4), a physical random access channel (physical random access channel, PRACH), CSI-RS, or a sounding reference signal (sounding reference signal, SRS).
For example, the correspondence between the signal and the gain offset may be as shown in table 3, and if the second information indicates that the first signal is SIB1, the relay device may determine the gain offset Δ (1) corresponding to SIB1, that is, the first gain offset Δ according to the correspondence shown in table 3 j =Δ (1), relay device determines relay gain G NCR，j Including the gain offset delta (1). The relay device performs power amplification on SIB1 based on the relay forwarding gain.
TABLE 3 Table 3
| Signal signal | Gain offset value delta [ dB ]] |
| SS/PBCH | Δ(0) |
| SIB1/Msg4 | Δ(1) |
| Msg2 | Δ(2) |
| CSI-RS | Δ(3) |
| … | … |
In one implementation, the gain offset for the uplink signal and the downlink signal are different, e.g., the correspondence between the signal and the gain offset may be as shown in table 4. But the present application is not limited thereto.
TABLE 4 Table 4
| Downstream signal | Gain offset value delta [ dB ]] | Uplink signal | Gain offset value delta [ dB ]] |
| SS/PBCH | Δ(0) | PRACH | Δ(4) |
| SIB1/Msg4 | Δ(1) | SRS | Δ(5) |
| Msg2 | Δ(2) | Msg3 | Δ(6) |
| CSI-RS | Δ(3) | SRS | Δ(7) |
| … | … | … | … |
The correspondence between the signals and the gain offsets may be predefined or preconfigured by the network device, e.g. the network device may configure the correspondence for the relay device through the first information or other information, and the relay device may determine the gain offset corresponding to each signal according to the configuration information. The present application is not limited in this regard.
The second information may indicate a first scaling factor alpha j For example, the network device configures a plurality of scaling factors with the first information, and the second information may indicate a first scaling factor of the plurality of scaling factors.
For example, the first information is further configured with an identifier of each of the plurality of scaling factors, and the second information may include an identifier of the first scaling factor, and the relay device determines, after receiving the second information, the first scaling factor corresponding to the identifier according to the identifier. The relay device determines a relay forwarding gain comprising a product of the first scaling factor and a first nominal gain.
As the relay device can be based on the first nominal gain G nominal And a first expansion factor alpha j Determining a relay forwarding gain G NCR，j Illustratively, G NCR，j Satisfies the following formula:
G NCR，j ＝α j G nominal (2)
if the second information indicates both the first gain offset and the first scaling factor, the relay forwarding gain G is illustratively NCR，j Satisfies the following formula:
G NCR，j ＝α j G nominal +Δ j (3)
in one embodiment, the first information configures one or more gain adjustment parameter sets, one gain adjustment parameter set comprising a gain offset and/or a scaling factor. The second information may indicate an identification of the set of gain adjustment parameters (e.g., g0-NCR-AlphaSetId, supra).
The relay device determines a first gain adjustment parameter set corresponding to the identifier according to the identifier of the gain adjustment parameter set indicated by the second information, if the first gain adjustment parameter set includes a first gain offset, the first gain offset is used for determining a relay forwarding gain, as shown in formula (1), and if the first gain adjustment parameter set includes a first scaling factor, the product of the first scaling factor and a first nominal gain is used for determining the relay forwarding gain, as shown in formula (2). If the first gain adjustment parameter set includes a first gain offset and a first scaling factor, the product of the first scaling factor and a first nominal gain and the first gain offset are used to determine a relay gain, as shown in equation (3).
Optionally, the second information may indicate the first gain adjustment parameter set by indirectly indicating, for example, the second information specifically indicates the first relay beam, and the relay device determines, according to the first relay beam indicated by the second information and a first correspondence between the relay beam and the gain offset set, a first gain offset set corresponding to the first relay beam. The relay device determines a relay repeating gain based on the first set of gain adjustment parameters and repeats the signal via the first relay beam based on the relay repeating gain.
Illustratively, the first correspondence between the relay beams and the gain offset groups may be as shown in table 5, where one relay beam corresponds to the identification G0-NCR-AlphaSetId of one gain adjustment parameter group, but the present application is not limited thereto.
TABLE 5
| Relay beam | G0-NCR-AlphaSetId |
| Beam #0 | 0 |
| Beam #1 | 1 |
| Beam #2 | 2 |
| Beam #3 | 3 |
| … | … |
The beam indicated by the second information may be a beam of the relay device on the access link side or a beam of the backhaul link side. Or the second information indicates the beam at the access link side and the beam at the return link side, and the relay device determines the first gain adjustment parameter set according to the beam at the access link side and the beam at the return link side indicated by the second information. Illustratively, the relay device may determine the first gain adjustment parameter set according to the second information and the correspondence relationship as shown in table 6.
TABLE 6
| Backhaul link side beam | Access link side beam | G0-NCR-AlphaSetId |
| Beam #0 | Beam # a | 0 |
| Beam #1 | Beam #b | 1 |
| Beam #2 | Beam #c | 2 |
| Beam #3 | Beam #d | 3 |
| … | … | … |
The first correspondence between the beams and the gain adjustment group may be predefined or preconfigured by the network device, e.g. the network device may configure the first correspondence for the relay device with the first information or other information. The present application is not limited in this regard.
Alternatively, the second information may indicate the first set of gain adjustment parameters indirectly by indicating the signal to be forwarded. If the second information specifically indicates the signal to be forwarded, the relay device determines a first gain adjustment parameter set corresponding to the signal to be forwarded according to a second corresponding relation between the signal and the gain adjustment parameter set. The relay device determines a relay forwarding gain according to the first nominal gain and the first gain adjustment parameter set, and forwards the signal to be forwarded indicated by the second information according to the relay forwarding gain.
For example, as shown in table 7, the second correspondence between the signal and the gain adjustment parameter set may be that one signal corresponds to an identifier G0-NCR-AlphaSetId of one gain adjustment parameter set, the signal to be forwarded indicated by the second information is Msg2, and the relay device determines, according to the second correspondence shown in table 7, the gain adjustment parameter set identified as 2 corresponding to Msg2, and the relay device determines a relay forwarding gain according to the gain adjustment parameter set identified as 2, and forwards Msg2 according to the relay forwarding gain.
TABLE 7
| Signal signal | G0-NCR-AlphaSetId |
| SS/PBCH | 0 |
| SIB1/Msg4 | 1 |
| Msg2 | 2 |
| CSI-RS | 3 |
| … | … |
In one implementation, the gain offset corresponding to the uplink signal and the downlink signal are different, for example, the correspondence between the signal and the gain offset may be as shown in table 8. But the present application is not limited thereto.
TABLE 8
| Downstream channel/signal | G0-NCR-AlphaSetId | Uplink channel/signal | G0-NCR-AlphaSetId |
| SS/PBCH | 0 | PRACH | 4 |
| SIB1/Msg4 | 1 | SRS | 5 |
| Msg2 | 2 | Msg3 | 6 |
| CSI-RS | 3 | SRS | 7 |
| … | … | … | … |
The correspondence between the signals and the gain adjustment group may be predefined or preconfigured by the network device, e.g. the network device may configure the correspondence for the relay device with the first information or other information. The present application is not limited in this regard.
Optionally, the second information is further used to indicate a first gain control adjustment amount δ NCR，j . The first gain control adjustment is used to determine a relay forwarding gain.
The second information may include a gain control command (gain control command, GCC) field for indicating the first gain control adjustment amount. Illustratively, the relay device is based on a first nominal gain G nominal And second information, determining a relay forwarding gain G NCR，j Satisfies the following formula:
G NCR，j ＝α j G nominal +Δ j +δ NCR，j (4)
if the second information does not indicate the first expansion factor, α in the above formula j Take a value of 1, if the second information does not indicate the first gain offset, Δ j The following parameters are the same in each formula and are not repeated here.
Optionally, the relay device determines the relay forwarding gain by adopting a mode of accumulating gain control adjustment amounts, that is, the relay device determines the relay forwarding gain according to accumulating the received multiple gain control adjustment amounts, where the multiple gain control adjustment amounts include the first gain control adjustment amount. Illustratively, the relay forwarding gain G NCR，j Satisfies the following formula:
wherein the first gain control adjustment amount delta NCR，j The ith gain control adjustment amount indicated to the relay device for the network device, i.e., delta in equation (5) NCR (i)＝δ NCR，j 。
In one example, the relay device may determine the relay forwarding gain without using a summation manner of gain control adjustment amounts, that is, the relay device determines the relay forwarding gain according to equation (4). Or the relay device may be predefined to determine the relay forwarding gain in a manner of accumulating the gain control adjustment amounts, that is, the relay device determines the relay forwarding gain according to equation (5).
In another example, the at least one gain adjustment parameter of the first information configuration further includes an accumulation mode enable parameter for configuring an accumulation mode that enables or disables the gain control adjustment amount. The relay device determines whether the accumulation mode of the gain control adjustment amount is enabled according to the first information, if the accumulation mode is not enabled, the relay device does not determine the relay forwarding gain by adopting the accumulation mode of the gain control adjustment amount, for example, the relay device determines the relay forwarding gain according to the mode of the formula (4). If the accumulation mode is enabled, the relay device determines a relay forwarding gain by using the accumulation mode of the gain control adjustment amounts, e.g., the relay device determines the relay forwarding gain according to the above formula (5), where the relay forwarding gain includes a plurality of gain control adjustment amounts including the first gain control adjustment amount and including the gain control adjustment amount indicated to the relay device by the network device before transmitting the second information.
Alternatively, a correspondence between the indication value of the GCC field and the gain control adjustment amount may be predefined or preconfigured by the network device, and the relay device determines the gain control adjustment amount indicated by the second information according to the indication value passing through the GCC field and the correspondence.
For example, the corresponding relation between the indicated value of the GCC field and the gain control adjustment amount is shown in Table 9, the GCC field may include 2 bits, the 2 bits indicate 0, and if the accumulation mode is enabled, delta NCR Is-1, delta if accumulation mode is not enabled NCR Is absolute delta NCR -2; the 2 bits indicate 1, delta, whether or not accumulation mode is enabled NCR Are all 0; the 2-bit indications 2, 3 may be as shown with reference to table 9.
TABLE 9
| GCC field | Accumulating delta NCR [dB] | Absolute delta NCR [dB] |
| 0 | -1 | -2 |
| 1 | 0 | 0 |
| 2 | 1 | 2 |
| 3 | 3 | 4 |
It should be noted that table 9 is only an example, and the correspondence between the indication value of the GCC field and the gain control adjustment amount in the specific implementation may be determined according to the specific implementation. And, GCC field value and accumulated delta NCR Corresponding relation of (2) and GCC field value and absolute delta NCR The corresponding relation of (a) may be represented by two tables respectively, and it is determined which table is adopted according to whether the accumulation mode of the gain control adjustment amount indicated by the first information is enabled, which is not limited in this application.
In one example, the gain control adjustment amounts included in the uplink forwarding gain for amplifying the uplink signal from the access link and the downlink forwarding gain for amplifying the downlink signal from the backhaul link are the same, and the gain control adjustment amounts may be obtained according to the GCC field in the second information and the correspondence relationship shown in table 9.
In another example, the gain control adjustment amounts used to determine the uplink relay forwarding gain and the downlink relay forwarding gain are different, and the correspondence relationship shown in table 9 may be used to determine the gain control adjustment amount included in the downlink relay forwarding gain, and the gain control adjustment amount included in the uplink relay forwarding gain may be obtained according to the correspondence relationship shown in table 10.
Table 10
| GCC domain | Accumulating delta NCR [dB] | Absolute delta NCR [dB] |
| 0 | -4 | -2 |
| 1 | 0 | 0 |
| 2 | 4 | 2 |
| 3 | 8 | 4 |
Alternatively, the uplink accumulated gain control adjustment amount and the downlink accumulated gain control adjustment amount are different, and the uplink absolute gain control adjustment amount and the downlink absolute gain control adjustment amount are the same. For example, a correspondence relationship as shown in Table 11 may be defined, in which if the accumulation mode of the gain control adjustment amounts is enabledThe relay device respectively determines the uplink accumulation delta according to the corresponding relation between the GCC field in the second information and the table 11 NCR And downstream accumulated delta NCR . If the accumulation mode of the gain control adjustment amount is not enabled, the relay device determines an absolute delta according to the corresponding relationship between the GCC field in the second information and the table 11 NCR The absolute delta NCR The method is suitable for determining the uplink relay forwarding gain and the downlink relay forwarding gain. But the present application is not limited thereto.
TABLE 11
| GCC domain | Up-going accumulation delta NCR [dB] | Downstream accumulation delta NCR [dB] | Absolute delta NCR [dB] |
| 0 | -4 | -1 | -2 |
| 1 | 0 | 0 | 0 |
| 2 | 4 | 1 | 2 |
| 3 | 8 | 3 | 4 |
Optionally, the relay forwarding gain is determined by the relay device according to the first EVM gain adjustment amount. May include, but is not limited to, the following two embodiments.
In one embodiment, the second information further indicates a first EVM gain adjustment amount used to determine a relay forwarding gain, the relay device including the first EVM gain adjustment amount based on the first nominal gain and the second information. Illustratively, the relay forwarding gain G NCR，j Satisfies the following formula:
C NCR，j ＝α j G nominal +Δ j +δ NCR +δ EVM，j (6)
wherein, if the second information does not indicate the gain control adjustment amount, δ NCR =0. Alternatively, the second information indicates the first gain control adjustment amount, and if the first information configures the accumulation mode of the gain control adjustment amount to be disabled, δ NCR ＝δ NCR，j If the accumulation mode of the first information configuration gain control adjustment quantity is enabled, then The following is a description of the various aspects and is not repeated.
Optionally, the second information includes a first field for indicating a first EVM gain adjustment amount.
In one example, the indication value of the first field and the EVM gain adjustment amount δ may be predefined EVM Corresponding relation of (3).
In another example, the indication value of the first field and the EVM gain adjustment amount δ may be preconfigured by the network device for the relay device EVM Corresponding relation of (3).
For example, the relay device may report the range of values of the EVM gain adjustment amount to the network device, such as the relay device may report the maximum value of the EVM gain adjustment amount, or a plurality of selectable values of the EVM gain adjustment amount to the network device. The network device may configure a plurality of candidate EVM gain adjustment amounts for the relay device according to the value range of the EVM gain adjustment amount reported by the relay device, and configure a correspondence between the plurality of candidate EVM gain adjustment amounts and the indication value of the first field, where the first EVM gain adjustment amount indicated by the network device through the second information is one of the plurality of candidate EVM gain adjustment amounts. Optionally, the plurality of candidate EVM gain adjustment amounts configured by the network device for the relay device are within a range of values of the EVM gain adjustment amounts reported by the relay device.
The relay device determines a first EVM gain adjustment amount indicated by the second information according to the indication value and the correspondence relationship through the first field. The first field may also be referred to as an EVM field or EVM domain.
For example, the corresponding relation between the indicated value of the first field and the EVM gain adjustment amount in the second information is shown in Table 12, the first field may include 2 bits, the 2 bits indicate 0, delta EVM -6; indication 1, delta EVM =0; indication 2, delta EVM =6; indication 3, delta EVM =12. But the present application is not limited thereto.
Table 12
| First field | δ EVM [dB] |
| 0 | -6 |
| 1 | 0 |
| 2 | 6 |
| 3 | 12 |
In another embodiment, the relay device determines, according to the first modulation mode, a first EVM gain adjustment amount δ corresponding to the first modulation mode EVM，j For determining the relay forwarding gain. The relay forwarding gain G NCR，j Satisfying the formula (6). The first modulation mode is a modulation mode in which the relay device adopts the signal forwarded by the relay forwarding gain.
For example, the correspondence between the modulation mode and the EVM gain adjustment amount may be predefined or preconfigured by the network device, e.g., the EVM gain adjustment amount corresponding to the quadrature phase shift keying (quadrature phase shift keying, QPSK) modulation mode is δ EVM1 EVM gain adjustment amount corresponding to 16 quadrature amplitude modulation (quadrature amplitude modulation, QAM) modulation mode is delta EVM2 EVM gain adjustment quantity corresponding to 64QAM modulation mode is delta EVM3 The EVM gain adjustment amount corresponding to 256QAM modulation mode is delta EVM4 Etc. If the modulation mode of the signal to be forwarded is 64QAM, the EMV gain adjustment amount is delta EVM3 For determining the relay forwarding gain. But the present application is not limited thereto.
In one example, the relay device may determine the relay forwarding gain according to the EVM gain adjustment amount, which may be predefined, and then the relay device determines the relay forwarding gain according to equation (6). Or it may be predefined that the relay device does not determine the relay forwarding gain based on the EVM gain adjustment amount, then the relay device does not determine the relay forwarding gain based on the EVM gain adjustment amount.
In another example, if the relay device supports EVM gain adjustment, the relay device determines the relay forwarding gain according to the EVM gain adjustment amount. If the relay does not support EVM gain adjustment, the relay device does not determine a relay forwarding gain based on the EVM gain adjustment amount. Further, the relay device informs the network device that the relay device supports EVM gain adjustment through the capability information, and the network device may determine whether the relay device supports EVM gain adjustment according to the capability information, so as to determine whether the relay device determines a relay forwarding gain according to the EVM gain adjustment amount.
In another example, the at least one gain adjustment parameter of the first information configuration includes an EVM gain adjustment amount enable parameter, and the relay device is based on the first EVM gain adjustment amount δ if the EVM gain adjustment amount enable parameter enables the EVM gain adjustment amount EVM，j And determining the relay forwarding gain. If the EVM gain adjustment amount configured by the first information does not enable the EVM gain adjustment amount by the parameter, the relay device does not determine a relay forwarding gain based on the EVM gain adjustment amount. Or the relay device determines that the relay forwarding gain does not contain the EVM gain adjustment amount, or delta in formula (6) EVM，j And 0, and the following is the same and will not be repeated.
Optionally, the second information is further used to indicate the first uplink gain adjustment amount δ UL，j The first uplink gain adjustment amount is used to determine a relay forwarding gain. The relay forwarding gain determined by the relay device is an uplink relay forwarding gain adjustment amount, and the relay device determines the relay forwarding gain according to the first nominal gain and the second information and includes the first uplink gain adjustment amount. Illustratively, the relay forwards the gain G NCR，j Satisfies the following formula:
G NCR，j ＝α j G nominal +Δ j +δ NCR +δ EVM，j +δ UL，j (7)
for example, the uplink relay forwarding is the same as the downlink relay forwarding by using the relay beam, specifically, if the relay device uses the same beam as the uplink relay forwarding by using the transmit beam and the downlink relay forwarding by using the receive beam, and/or uses the same beam as the downlink relay forwarding by using the receive beam and the transmit beam, the network device may indicate the first uplink gain adjustment amount by using the second information, where the first uplink gain adjustment amount is used to determine the relay forwarding gain.
Optionally, the second information includes a second field for indicating a first uplink gain adjustment amount, which mayThe indication value of the second field and the uplink gain adjustment delta are pre-configured by the network equipment UL The relay device determines a first uplink gain adjustment amount indicated by the second information according to the indication value passing through the second field and the correspondence. The second field may be referred to as an Uplink (UL) gain adjustment amount field, an UL adjustment field, or an UL adjustment field.
For example, the corresponding relation between the indication value of the second field and the uplink gain adjustment amount in the second information is shown in table 13, the second field may include 2 bits, the 2 bits indicate 0, delta UL -8; indication 1, delta UL =0; indication 2, delta UL =4; indication 3, delta UL =8. But the present application is not limited thereto.
TABLE 13
| Second field | δ UL [dB] |
| 0 | -8 |
| 1 | 0 |
| 2 | 4 |
| 3 | 8 |
In one example, if the relay device determines the uplink relay forwarding gain according to the uplink gain adjustment amount, which may be predefined, the relay device adjusts the amount δ according to the first uplink gain based on equation (7) UL，j And determining the relay forwarding gain. Or it may be predefined that the relay device does not determine the uplink relay forwarding gain based on the uplink gain adjustment amount, then the relay device does not determine the uplink relay forwarding gain based on the uplink gain adjustment amount.
In another example, the at least one gain adjustment parameter configured by the first information includes an uplink gain adjustment amount enabling parameter, and if the uplink gain adjustment amount enabling parameter enables the uplink gain adjustment amount, the relay device performs the first uplink gain adjustment amount δ according to equation (7) UL，j And determining the relay forwarding gain. If the uplink gain adjustment amount enabling parameter does not enable the parameter to enable the uplink gain adjustment amount, the relay device does not determine a relay forwarding gain based on the uplink gain adjustment amount. Or the relay device determines that the relay gain does not include the uplink gain adjustment amount, or delta in formula (7) EVM，j And 0, and the following is the same and will not be repeated.
It should be noted that, the above tables shown in the embodiments of the present application are merely examples, and in a specific implementation, the number of bits included in each field and the value of each adjustment amount may be determined according to a specific implementation requirement. The present application is not limited in this regard. And the network device may indicate the gain adjustment amount for determining the relay gain to the relay device through one or more pieces of information, that is, the gain adjustment amount for determining the relay gain may be carried in one or more pieces of information transmitted from the network device to the relay device, or the second information may be composed of one or more pieces of information transmitted from the network device to the relay device.
S304, the relay device forwards the signal from the network device or the terminal device according to the relay forwarding gain.
The maximum gain of the relay device's forwarded signal cannot exceed the maximum relay forwarding gain G max 。
In one embodiment, the maximum relay forwarding gain G max Corresponding to the amplifying capability of the relay device, namely the maximum amplifying gain value supported by the relay amplifying and forwarding circuit.
In another embodiment, the maximum relay forwarding gainG max The isolation between the reception and transmission (antenna or port) of the corresponding relay device, i.e. if this maximum relay forwarding gain is exceeded, the forwarding function of the relay device may be affected, resulting in a reduced quality of the signal forwarded by the relay device or an unstable (e.g. free-running) amplification circuit. Accordingly, the relay device forwards the gain G according to the relay determined in S303 NCR，j And maximum relay forwarding gain G max Minimum value G of (2) NCR And amplifying and forwarding the received signals. Namely G NCR ＝min(G NCR，j ，G max )。
For example, the second information indicates a first gain offset, based on the first gain offset delta j Relay gain G employed by relay device NCR The method meets the following conditions:
G NCR ＝min{G max ，G nominal +Δ j }.
for example, the second information indicates the first gain offset delta j And a first EVM gain adjustment amount delta EVM，j Relay gain G employed by relay device NCR The method meets the following conditions:
G NCR ＝min{G max ，G nominal +Δ j +δ EVM，j }
for example, the second information indicates the first gain offset delta j And a first gain control adjustment amount delta NCR，j Relay gain G employed by relay device NCR The method meets the following conditions:
G NCR ＝min{G max ，G nominal +Δ j +δ NCR，j }
for example, the second information indicates the first gain offset delta j And a first gain control adjustment amount delta NCR，j The first gain control adjustment amount delta NCR，j Is the gain control adjustment amount accumulated for the ith time, and the relay forwarding gain G adopted by the relay equipment NCR The method meets the following conditions:
for example, the second information indicates the first gain offset delta j First EVM gain adjustment amount delta EVM，j And a first gain control adjustment amount delta NCR，j Relay gain G employed by relay device NCR The method meets the following conditions:
G NCR ＝min{G max ，G nominal +Δ j +δ EVM，j +δ NCR，j }
for another example, a first gain control adjustment amount delta NCR，j Is the gain control adjustment amount accumulated for the ith time, and the relay forwarding gain G adopted by the relay equipment NCR The method meets the following conditions:
/>
further, the relay transfer gain is related to the uplink or downlink transfer direction, for example, the uplink gain adjustment amount δ in the uplink amplification transfer UL，j Related to the following.
For example, based on the first gain offset delta j And a first uplink gain adjustment amount delta UL，j Uplink relay forwarding gain G adopted by relay equipment NCR The method meets the following conditions:
G NCR ＝min{G max ，G nominal +Δ j +δ UL，j }.
for example, based on the first gain offset delta j First uplink gain adjustment amount delta UL，j And a first EVM gain adjustment amount delta EVM，j Relay gain G employed by relay device NCR The method meets the following conditions:
G NCR ＝min{G max ，G nominal +Δ j +δ UL，j +δ EVM，j }
for example, based on the first gain offset delta j First uplink gain adjustment amount delta UL，j And a first gain control adjustment amount delta NCR，j Relay gain G employed by relay device NCR The method meets the following conditions:
G NCR ＝min{G max ，G nominal +Δ j +δ UL，j +δ NCR，j }
for example, a first gain control adjustment amount delta NCR，j Is the gain control adjustment amount accumulated for the ith time, and the relay forwarding gain G adopted by the relay equipment NCR The method meets the following conditions:
for example, based on the first gain offset delta j First uplink gain adjustment amount delta UL，j First EVM gain adjustment amount delta EVM，j And a first gain control adjustment amount delta NCR，j Relay gain G employed by relay device NCR The method meets the following conditions:
G NCR ＝min{G max ，G nominal +Δ j +δ UL，j +δ EVM，j +δ NCR，j }
for another example, a first gain control adjustment amount delta NCR，j Is the gain control adjustment amount accumulated for the ith time, and the relay forwarding gain G adopted by the relay equipment NCR The method meets the following conditions:
in the above examples, the first scaling factor alpha is assumed j =1, or the network device does not indicate a scaling factor, the default scaling factor is 1. Further, if the first information configures or the second information indicates the first scaling factor α j The following examples may be included.
For example, based on a first scaling factor alpha j And a first gain offset delta j Uplink relay forwarding gain G adopted by relay equipment NCR The method meets the following conditions:
G NCR ＝min{G max ，α j G nominal +Δ j }.
for example, based on a first scaling factor alpha j First gain offset delta j And a first EVM gain adjustment amount delta EVM，j Relay gain G employed by relay device NCR The method meets the following conditions:
G NCR ＝min{G max ，α j G nominal +Δ j +δ EVM，j }
for example, based on a first scaling factor alpha j First gain offset delta j And a first gain control adjustment amount delta NCR，j Relay gain G employed by relay device NCR The method meets the following conditions:
G NCR ＝min{G max ，α j G nominal +Δ j +δ NCR，j }
for example, a first gain control adjustment amount delta NCR，j Is the gain control adjustment amount accumulated for the ith time, and the relay forwarding gain G adopted by the relay equipment NCR The method meets the following conditions:
for example, based on a first scaling factor alpha j First gain offset delta j First EVM gain adjustment amount delta EVM，j And a first gain control adjustment amount delta NCR，j Relay gain G employed by relay device NCR The method meets the following conditions:
G NCR ＝min{G max ，α j G nominal +Δ j +δ EVM，j +δ NCR，j }
for another example, a first gain control adjustment amount delta NCR，j Is the gain control adjustment amount accumulated for the ith time, and the relay forwarding gain G adopted by the relay equipment NCR The method meets the following conditions:
further, during upstream amplification and transmission, the gain adjustment amount delta is adjusted with the upstream gain adjustment amount delta UL，j Related to the following.
For example, based on a first scaling factor alpha j First uplink gain adjustment amount delta UL，j And a first gain offset delta j Uplink relay forwarding gain G adopted by relay equipment NCR The method meets the following conditions:
G NCR ＝min{G max ，α j G nominal +Δ j +δ UL，j }
for example, based on a first scaling factor alpha j First gain offset delta j First uplink gain adjustment amount delta UL，j And a first EVM gain adjustment amount delta EVM，j Relay gain G employed by relay device NCR The method meets the following conditions:
G NCR ＝min{G max ，α j G nominal +Δ j +δ UL，j +δ EVM，j }
for example, based on a first scaling factor alpha j First gain offset delta j First uplink gain adjustment amount delta UL，j And a first gain control adjustment amount delta NCR，j Relay gain G employed by relay device NCR The method meets the following conditions:
G NCR ＝min{G max ，α j G nominal +Δ j +δ UL，j +δ NCR，j }
for example, a first gain control adjustment amount delta NCR，j Is the gain control adjustment amount accumulated for the ith time, and the relay forwarding gain G adopted by the relay equipment NCR The method meets the following conditions:
for example, based on a first scaling factor alpha j First gain offset delta j First uplink gain adjustment amount delta UL，j First EVM gain adjustment amount delta EVM，j And a first gain control adjustment amount delta NCR，j Relay gain G employed by relay device NCR The method meets the following conditions:
G NCR ＝min{G max ，α j G nominal +Δ j +δ UL，j +δ EVM，j +δ NCR，j }
for another example, a first gain control adjustment amount delta NCR，j Is the gain control adjustment amount accumulated for the ith time, and the relay forwarding gain G adopted by the relay equipment NCR The method meets the following conditions:
if the relay device forwards the downlink signal, the relay device determines a relay forwarding gain min (G NCR，j ，G max ) And the relay equipment amplifies the received downlink signal from the network equipment according to the relay forwarding gain and forwards the amplified downlink signal to the terminal equipment.
If the relay device forwards the uplink signal, the relay device determines a relay forwarding gain min (G NCR，j ，G max ) And the relay equipment amplifies the received uplink signal from the terminal equipment according to the relay forwarding gain and forwards the amplified uplink signal to the network equipment.
According to the scheme, the network equipment can configure the relay equipment with the relay equipment through the first information to determine the relevant parameters of the relay forwarding gain, and then indicate the parameter values for adjusting the relay forwarding gain through the second information, so that the network equipment can adaptively control the relay forwarding gain of the relay equipment according to the forwarding signal, and the reliability of signal forwarding is improved.
Optionally, the network device may send third information to the relay device, where the third information is used to indicate a second nominal gain, and the second nominal gain is the updated nominal gain. The relay device determines a relay forwarding gain according to the second nominal gain.
As an example and not by way of limitation, the third information may be carried in a radio access control (medium access control, MAC) Control Element (CE), or in DCI.
That is, the network device may adaptively (e.g., based on channel variations, etc.) update the nominal gain after configuring the first nominal gain for the relay device.
In one embodiment, the third information may include a second nominal gainThe relay device determines a second nominal gain based on the third information.
In another embodiment, the third information may include an update amount epsilon, and the relay device determines the second nominal gain based on the first nominal gain and the update amountIllustratively, the->The method meets the following conditions:
the network device may update the nominal gain multiple times, in one example of this embodiment, the relay device determines an updated nominal gain with a first nominal gain configured by the network device and a current update amount each time the nominal gain is updated. For example, the network device updates the nominal gain by the kth time of the third information, the third information specifically comprises the update amount ε k After receiving the third information, the relay device configures a first nominal gain G according to the network device nominal And the current update amount epsilon k Determining a second nominal gainIllustratively, the->The method meets the following conditions:
in another example of this embodiment, the relay device updates the nominal gain in an accumulated manner, and the network device determines the updated nominal gain with the current nominal gain and the current update amount each time the nominal gain is updated. That is, the relay device determines the second nominal gain based on the sum of the first nominal gain and the amount of updates received from the past Illustratively, the->The method meets the following conditions:
alternatively, the relay device may be predefined to accumulate the update amount from the start-up. Alternatively, the relay device may periodically perform an accumulated update amount, i.e., 0 at the start time of a period (or before the first update in a period), based on G nominal Determining an amplification gain, first updating and then updating the gain according to the updated nominal gainForwarding is performed. For example, the relay device accumulates the received update amount in one period based on the first nominal gain configured by the network device over the period of 20 ms.
The relay device determines an updated second nominal gain according to the third informationAnd then, the relay equipment determines a relay forwarding gain according to the second nominal gain. In particular, the manner in which the relay forwarding gain is determined based on the first nominal gain may be referred to the relay device described in the foregoing, as will be described in the foregoing formulasG of (2) nominal Replaced by->For brevity, no further description is provided herein.
According to the scheme, the dynamic adjustment of the nominal gain can adapt to the change of the back-transmission side channel and/or the access side channel, the amplification gain of the relay can be adjusted in real time, the transmission performance can be improved, and the relay saturation caused by the overlarge relay forwarding gain is prevented.
It should be understood that the sequence numbers of the steps in the flowcharts (e.g. fig. 3, 4, 7 to 9) in this application are not limited to the order in which the steps are executed by the device, and the execution order of the steps should be determined by the functions and the internal logic. Furthermore, the various steps are merely examples and not necessarily every step may be performed. Those skilled in the art may implement the relay forwarding method provided in the present application based on the same conception, and may make simple changes based on the flow shown in the figures, for example, make adjustments to the execution sequence of some steps, or add other steps or reduce steps therein. Such variations are intended to fall within the scope of the present application.
Fig. 4 is a schematic flow chart of a signal relay forwarding method 400 provided in an embodiment of the present application. The relay forwarding method 400 may include, but is not limited to, the following steps:
s401, the network device sends fourth information to the relay device, where the fourth information is used to configure the reference signal.
Accordingly, the relay device receives the fourth information from the network device, and the relay device determines a downlink reference signal for measurement according to the fourth information. The reference signal may be a reference signal for estimating path loss, or a reference signal for assisting in determining relay forwarding gain, or a power condition for determining a signal of a relay device receiving network device. The reference signal may be referred to as a path loss reference signal, a relay reference signal, or the like, which is not limited in this application.
The reference signal may be, for example, one or more of a demodulation reference signal (demodulation reference signal, DMRS), CSI-RS, or SSB.
S402, the network device transmits a reference signal to the relay device.
The network device sends the reference signal of the fourth information configuration to the relay device. Accordingly, the relay device receives the reference signal and measures the reference signal in S403.
S403, the relay device measures the reference signal.
The relay device measures the reference signal from the network device to obtain the received power P of the reference signal Rx . Further, the relay device may obtain path loss information between the relay device and the network device according to the received power of the reference signal. The path loss information may include one or more of the following:
channel quality indication (channel quality indicator, CQI), reference signal received signal power (Reference Signal Received Power, RSRP), reference signal received signal quality (reference signal received quality, RSRQ), or received signal strength (received signal strength indicator, RSSI).
After the relay device measures the reference signal, the first mode and the second mode provided in the embodiments of the present application are two modes.
In the first embodiment, the following steps S404a and S404b are included.
S404a, the relay device sends a measurement report to the network device.
Accordingly, the network device receives the measurement report from the relay device. The measurement report includes the measurement result of the relay device measuring the reference signal, such as the path loss information described above.
S404b, the network device sends fifth information to the relay device, where the fifth information is used to configure the relay forwarding gain.
The network device may determine a relay forwarding gain of the relay device based on the received measurement report from the relay device. And the network equipment sends the fifth information to the relay equipment, and the relay equipment determines relay forwarding gain according to the fifth information after receiving the fifth information. The relay forwarding gain may be a downlink relay forwarding gain.
In the second embodiment, the following step S404c is included.
S404c, the network device sends sixth information to the relay device, where the sixth information is used to configure the relay forwarding power.
Accordingly, the relay device receives the sixth information from the network device, and determines the relay forwarding power P according to the sixth information Tx . The relay forwarding power may be the total transmit power over the signal bandwidth or the transmit power over one Resource Element (RE) over the signal bandwidth. Or the transmission power of other resource units, this is not limited in this application.
Received power P obtained by relay device according to measurement reference signal Rx Forward power P Tx The relay forwarding gain G may be determined, and illustratively, the three parameters satisfy the following equation:
P Tx ＝P Rx +G。
wherein the received power P Rx Is the received power on a single RE obtained by measuring the reference signal, and therefore the forward power P Tx Is the transmit power on a single RE, but the present application is not limited thereto.
In one implementation, the relay device may report the gain G to the network device, and the network device determines the nominal gain G according to the gain G reported by the relay device nominal . Further, for the relay device to determine the received power P Rx Is configured for the network device. Still further, the relay apparatus determines the received power P Rx The reference signal of (a) may be at least one of SSB, CSI-RS. As described in other embodiments, the network device may further provide a nominal gain G nominaI Configured to the relay device. Optionally, the nominal gain configured by the network device does not exceed the gain G reported by the relay device.
In one implementation, the relay device may report the received power P of the reference signal to the network device Rx The network device can report the P according to the relay device Rx Determining a nominal increase Benefit is provided. Further, when the network device determines the nominal gain, the network device may also forward the power P with the relay device Tx Related to the following.
For example, the forwarding power P indicated by the fifth information sent by the network device Tx Or the total transmission power on the signal bandwidth, the receiving power P on the single RE can be used by the relay device Rx And calculating the total received power on the signal bandwidth, so as to obtain the relay forwarding gain based on the total transmitted power and the total received power on the signal bandwidth. Illustratively, the three parameters satisfy the following equation:
P Tx ＝P Rx +G+10log 10 W，
where W is a bandwidth parameter, for example, W is a signal bandwidth of the forwarded signal, and W may be configured by the network device for the relay device, or the relay device is determined according to the relay capability and the preconfiguration information. W may be expressed in terms of the number of carriers.
Optionally, the gain indicated by the network device or determined by the relay device is related to the bandwidth W of the forwarded signal. Alternatively, the forwarding signal bandwidth information may be determined based on network device configuration information.
And S405, the relay equipment forwards the downlink signal according to the relay forwarding gain.
And the relay equipment determines relay forwarding gain, and the relay equipment receives the downlink signal from the network equipment and forwards the downlink signal to the terminal equipment after amplifying the downlink signal based on the relay forwarding gain. If the transmission power of the downlink signal amplified by the relay forwarding gain is greater than the maximum transmission power allowed by the downlink, the relay device transmits the downlink signal with the maximum transmission power allowed by the downlink.
In one example, the relay device may determine relay transmit power information of one or more relay transmit beams based on a reference signal (e.g., reference Signal (RS) 0) based on the method shown in fig. 4.
For example, as shown in fig. 5, the relay device receives RS0 through relay beam #0, and may determine relay transfer power information #0 for transferring a downlink signal (e.g., signal # 0) through relay beam #0 based on the measurement result. And, the relay device may also determine relay transfer power information #1 in which the relay beam #1 transfers the downstream signal (e.g., signal # 1) based on the amount of difference between the relay beam #0 and the relay beam #1 and the relay transfer power information #0. For example, the difference amount may be a beam gain deviation amount and/or an isolation deviation amount between the relay beam #0 and the relay beam #1. But the present application is not limited thereto.
In another example, the relay device may determine relay forwarding power information for a plurality of beam pairs, one beam pair including one transmit beam of the network device and one relay forwarding beam of the relay device, based on the method as shown in fig. 4, based on the plurality of reference signals.
For example, as shown in fig. 6, the network device includes a plurality of transmission beams, such as a transmission beam #a and a transmission beam #b, the relay device includes a plurality of relay beams, such as a relay beam #0 and a relay beam #1, the relay device may receive the RS0 transmitted through the beam #a from the network device through the relay beam #0, determine relay forwarding power information #0 for forwarding a downlink signal (such as a signal # 0) from the transmission beam #a by the relay beam #0, and the relay forwarding power information #0 may be referred to as a pair-relay beam #0 and relay forwarding power information of the transmission beam #a. And the relay device may receive the RS1 transmitted through the beam #b from the network device through the relay beam #1, and determine relay forwarding power information #1 for forwarding the downlink signal (e.g., signal # 1) from the transmission beam #b by the relay beam #1. The relay transfer power information #1 may be referred to as relay transfer power information of the beam pair-relay beam #1 and the transmission beam #b.
Fig. 7 is a schematic flow chart of a signal relay forwarding method 700 provided in an embodiment of the present application. The relay forwarding method 700 may include, but is not limited to, the following steps:
s701, the network device transmits seventh information to the relay device and the terminal device, the seventh information being used to configure the reference signal.
Accordingly, the relay device receives the seventh information and determines an uplink reference signal for measurement according to the seventh information. The reference signal may be a reference signal for estimating the path loss, or a reference signal for assisting in determining the relay forwarding gain, or a power condition for determining the signal of the relay device receiving the terminal device. The reference signal may be referred to as a path loss reference signal, a relay reference signal, or the like, which is not limited in this application. And the terminal equipment receives the seventh information and determines an uplink reference signal which needs to be sent by the terminal equipment according to the seventh information.
The reference signal may be, for example, a sounding reference signal (Sounding reference signal, SRS), a physical random access channel (physical random access channel, PRACH) signal, or a random access preamble (preamble).
S702, the terminal equipment sends a reference signal to the relay equipment.
The terminal device sends the reference signal to the relay device according to the seventh information, and the relay device receives the reference signal from the terminal device according to the seventh information.
S703, the relay device measures the reference signal.
The relay device measures the reference signal from the terminal device to obtain the received power P of the reference signal Rx . Further, the relay device may obtain path loss information between the relay device and the terminal device according to the received power of the reference signal. The path loss information may be included as described above with reference to the embodiment shown in fig. 4.
After the relay device measures the reference signal, the first mode and the second mode provided in the embodiments of the present application are two modes.
In the first embodiment, the following steps S704a and S704b are included. In the embodiment shown in fig. 4, the relay device determines the downlink relay forwarding gain in the first and second modes, and in the embodiment shown in fig. 7, the relay device determines the uplink relay forwarding gain in the first and second modes, which may be specifically referred to the description in the embodiment shown in fig. 4, and will not be repeated herein for brevity.
S704a, the relay device sends a measurement report to the network device.
S704b, the network device sends eighth information to the relay device, where the eighth information is used to configure the relay forwarding gain.
And the relay equipment determines the uplink relay forwarding gain according to the eighth information.
In the second embodiment, the following step S704c is included.
S704c, the network device sends ninth information to the relay device, where the ninth information is used to configure relay forwarding power.
The relay device can obtain the uplink relay forwarding gain according to the relay forwarding power and the received power of the uplink reference signal obtained by measuring the uplink reference signal.
S705, the relay device forwards the uplink signal according to the relay forwarding gain.
The relay device determines a relay forwarding gain, and the relay forwarding gain is used for forwarding the uplink signal, so that the relay device receives the uplink signal from the terminal device, amplifies the uplink signal based on the relay forwarding gain, and forwards the amplified uplink signal to the network device. If the transmission power of the uplink signal amplified by the relay forwarding gain is greater than the maximum transmission power allowed by the uplink, the relay device transmits the uplink signal with the maximum transmission power allowed by the uplink.
The relay device may determine uplink relay forwarding power information of one or more relay forwarding beams based on a reference signal (e.g., denoted as RS 0) based on the method shown in fig. 7. Alternatively, the uplink relay forwarding power information of a plurality of beam pairs, one beam pair including one transmission beam of the terminal device and one relay forwarding beam of the relay device, may be determined based on the plurality of reference signals.
The embodiments shown in fig. 4 and fig. 7 above may be implemented in combination, so that the relay device determines both the downlink relay forwarding gain and the uplink relay forwarding gain, and the downlink relay forwarding gain and the uplink relay forwarding gain may be different gain values, or the downlink relay forwarding gain and the uplink relay forwarding gain may be the same gain value.
If the relay device receives and measures both the downlink reference signal from the network device and the uplink reference signal from the terminal device, the relay device or the network device can determine the target receiving power P of the signal receiving end through the measurement report of the terminal device 0 Or the target sender of the signal sending endPower transmission P 0 Thereby determining the amplification gain G. Specifically, the relay device or the network device can obtain the path loss between the relay device and the network device, the path loss PL between the relay device and the terminal device UE-RN And reference signal received power P Rx The forward power P can be relayed Tx . Illustratively, the relay forwarding power P Tx The method meets the following conditions:
P Tx ＝P 0 +PL。
and, a relay forwarding gain G may also be determined, illustratively, the relay forwarding gain G satisfies:
G＝P 0 +PL-P Rx 。
in the two formulas, for the relay forwarding of the uplink signal, P Rx For receiving the power of the uplink reference signal, pl=pl BS-RN The method comprises the steps of carrying out a first treatment on the surface of the For the relay forwarding of the downlink signals, P is Rx For receiving the power of the downlink reference signal, pl=pl UE-RN 。
Fig. 8 is a schematic flow chart of a signal relay forwarding method 800 provided in an embodiment of the present application. The relay forwarding method 800 shown in fig. 8 may be used to determine a downlink relay forwarding gain, and in the embodiment shown in fig. 8, compared to the embodiment shown in fig. 4, the reference signal from the relay device may be received and measured by the network device, so as to obtain the path loss information between the relay device and the network device. Thereby notifying the relay device of the downlink relay forwarding gain or the downlink relay forwarding power through the fifth information or the sixth information. The relay forwarding method 800 may include, but is not limited to, the following steps:
s801, the network device transmits tenth information to the relay device, the tenth information being used to configure the reference signal.
Accordingly, the relay device receives the tenth information from the network device, and determines to transmit the reference signal to the network device.
S802, the relay device transmits a reference signal to the network device.
The relay device transmits a reference signal to the network device according to the tenth information so that the network device measures the reference signal in S803.
S803, the network device measures the reference signal.
The network device measures the reference signal from the relay device to obtain the path loss information between the relay device and the network device.
S804, the network device transmits the fifth information or the sixth information to the relay device.
The network device may determine a downlink relay gain of the relay device by measuring the reference signal, so that the relay device may be notified through the fifth information. Or the network device may determine the downlink relay forwarding power by measuring the reference signal, so that the relay device may be notified by the sixth information.
S805, the relay device forwards the downlink signal according to the relay forwarding gain.
It should be noted that, in the embodiment shown in fig. 8, the same parts as those described in the previous embodiments may be referred to, and will not be described herein for brevity.
Fig. 9 is a schematic flowchart of a signal relay forwarding method 900 provided in an embodiment of the present application. The relay forwarding method 900 shown in fig. 9 may be used to determine an uplink relay forwarding gain, and compared to the embodiment shown in fig. 7, in the embodiment shown in fig. 9, the reference signal from the relay device may be received and measured by the terminal device, so as to obtain the path loss information between the relay device and the terminal device. The terminal device sends the measurement report to the network device, and the network device can inform the relay device of the uplink relay forwarding gain or the uplink relay forwarding power through eighth information or ninth information. The relay forwarding method 800 may include, but is not limited to, the following steps:
S901, the network device transmits eleventh information for configuring the reference signal to the relay device and the terminal device.
Accordingly, the relay device receives the eleventh information from the network device, and determines to transmit the reference signal to the terminal device. The terminal device receives the eleventh information from the network device, determines to receive the reference signal from the relay device.
S902, the relay device transmits a reference signal to the terminal device.
The relay device transmits a reference signal to the terminal device according to the eleventh information so that the terminal device measures the reference signal in S903.
S903, the terminal device measures the reference signal.
The terminal equipment measures the reference signal from the relay equipment to obtain the path loss information between the relay equipment and the terminal equipment.
S904, the terminal device sends a measurement report to the network device.
Accordingly, the network device receives the measurement report from the terminal device.
S905, the network device transmits eighth information or ninth information to the relay device.
The network device may determine an uplink relay gain of the relay device based on the measurement report from the terminal device, so that the relay device may be notified by the eighth information. Or the network device may determine the uplink relay forwarding power based on the measurement report from the terminal device, so that the relay device may be notified through the ninth information.
S906, the relay device forwards the uplink signal according to the relay forwarding gain.
It should be noted that, in the embodiment shown in fig. 8, the same parts as those described in the previous embodiments may be referred to, and will not be described herein for brevity.
According to the relay forwarding method provided in fig. 4 and fig. 7 to fig. 9, the received power and the path loss information of the reference signal can be obtained through the interaction of the reference signal between the devices, and the network device or the relay device can determine the relay forwarding gain or the transmission power of the relay device forwarding signal through the information interaction, so that the signal forwarding meeting the transmission requirement is realized, and the reliability of the relay forwarding is improved.
The methods provided herein are described in detail above with reference to the accompanying drawings. The following figures illustrate the communication device and communication apparatus provided by the present application. In order to implement the functions in the method provided in the present application, each network element may include a hardware structure and/or a software module, and implement the functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Some of the functions described above are performed in a hardware configuration, a software module, or a combination of hardware and software modules, depending on the specific application of the solution and design constraints.
Fig. 10 is a schematic block diagram of a communication device provided herein. As shown in fig. 10, the communication device 1000 may include a transceiver unit 1020.
In one possible design, the communication apparatus 1000 may correspond to the relay device in the above method, or a chip configured in (or used for) the relay device, or other apparatus, module, circuit, unit, or the like capable of implementing the method of the relay device.
It should be understood that the communication apparatus 1000 may include means for performing a method performed by the relay device among the methods illustrated in fig. 3, 4, and 7 to 9. The respective units in the communication device 1000 and the other operations and/or functions described above are respectively for realizing the respective flows of the methods shown in fig. 3, 4, and 7 to 9.
Optionally, the communication device 1000 may further comprise a processing unit 1010, which processing unit 1010 may be adapted to process instructions or data for performing the corresponding operations.
It should also be understood that when the communication apparatus 1000 is a chip configured (or used) in a relay device, the transceiver unit 1020 in the communication apparatus 1000 may be an input/output interface or a circuit of the chip, and the processing unit 1010 in the communication apparatus 1000 may be a processor in the chip.
Optionally, the communication device 1000 may further include a storage unit 1030, where the storage unit 1030 may be configured to store instructions or data, and the processing unit 1010 may execute the instructions or data stored in the storage unit, so as to enable the communication device to perform corresponding operations.
It should be understood that the transceiver unit 1020 in the communication apparatus 1000 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, may correspond to the transceiver 1110 in the relay device 1100 shown in fig. 11. The processing unit 1010 in the communication apparatus 1000 may be implemented by at least one processor, and may correspond to the processor 1120 in the relay device 1100 shown in fig. 11, for example. The processing unit 1010 in the communication device 1000 may also be implemented by at least one logic circuit. The storage unit 1030 in the communication apparatus 1000 may correspond to the memory 1130 in the relay device 1100 shown in fig. 11.
It should also be understood that the specific process of each unit performing the corresponding steps is described in detail in the above method, and is not described herein for brevity.
In another possible design, the communication apparatus 1000 may correspond to the network device in the above method, or a chip configured in (or used for) the network device, or other apparatus, module, circuit, unit, or the like capable of implementing the method of the network device.
It should be understood that the communication apparatus 1000 may include means for performing the method performed by the network device of the methods illustrated in fig. 3, 4, and 7 to 9. The respective units in the communication device 1000 and the other operations and/or functions described above are respectively for realizing the respective flows of the methods shown in fig. 3, 4, and 7 to 9.
Optionally, the communication device 1000 may further comprise a processing unit 1010, which processing unit 1010 may be adapted to process instructions or data for performing the corresponding operations.
It should also be understood that when the communication apparatus 1000 is a chip configured (or used) in a network device, the transceiver unit 1020 in the communication apparatus 1000 may be an input/output interface or a circuit of the chip, and the processing unit 1010 in the communication apparatus 1000 may be a processor in the chip.
Optionally, the communication device 1000 may further include a storage unit 1030, where the storage unit 1030 may be configured to store instructions or data, and the processing unit 1010 may execute the instructions or data stored in the storage unit, so as to enable the communication device to perform corresponding operations.
It should be appreciated that when the communication apparatus 1000 is a network device, the transceiver unit 1020 in the communication apparatus 1000 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, may correspond to the transceiver 1210 in the network device 1200 shown in fig. 12. The processing unit 1210 in the communication apparatus 1200 may be implemented by at least one processor, for example, may correspond to the processor 1220 in the network device 1200 shown in fig. 12, and the processing unit 1010 in the communication apparatus 1000 may be implemented by at least one logic circuit. The storage unit 1030 in the communication apparatus 1000 may correspond to the memory 1230 in the network device 1200 shown in fig. 12.
It should also be understood that the specific process of each unit performing the corresponding steps is described in detail in the above method, and is not described herein for brevity.
It should be noted that, in an implementation, the transceiver unit 1020 in the communication device 1000 may include a transmitting unit and/or a receiving unit, where the receiving unit is configured to receive a signal, and the transmitting unit is configured to transmit the signal. Specifically, whether the communication apparatus 1000 includes a transmitting unit may be determined according to whether the above scheme performed by the communication apparatus 1000 includes a transmitting action, and whether the communication apparatus 1000 includes a receiving unit may be determined according to whether the above scheme performed by the communication apparatus 1000 includes a receiving action.
Fig. 11 is a schematic structural diagram of a relay apparatus 1100 provided in the present application. The relay device 1100 may be applied to a system as shown in fig. 1, and perform the functions of the relay device in the above method. As shown, the relay device 1100 includes a processor 1120 and a transceiver 1110. Optionally, the relay device 1100 further comprises a memory. Wherein the processor 1120, transceiver 1110 and memory may communicate with each other via internal communication paths to transfer control signals and/or data signals. The memory is used for storing a computer program, and the processor 1120 is used for executing the computer program in the memory 1130 to control the transceiver 1110 to transmit and receive signals.
The processor 1120 described above may be used to perform the actions described in the previous method as being implemented internally by the relay device, while the transceiver 1110 may be used to perform the actions described in the previous method as being transmitted to or received from the network device by the relay device. Please refer to the description of the foregoing method, and the detailed description is omitted herein.
Fig. 12 is a schematic structural diagram of a network device 1200 provided in the present application. The network device 1200 may be used in a system as shown in fig. 1 to perform the functions of the network device in the above method. As shown, the network device 1200 includes a processor 1220 and a transceiver 1210. Optionally, the network device 1200 also includes a memory. Wherein the processor 1220, transceiver 1210 and memory may communicate with each other via internal communication paths to transfer control and/or data signals. The memory 1230 is used for storing a computer program, and the processor 1220 is used for executing the computer program in the memory to control the transceiver 1210 to transmit and receive signals.
The above-described processor 1220 may be used to perform the actions described in the previous method as being implemented internally by the network device, and the transceiver 1210 may be used to perform the actions described in the previous method as being transmitted to or received from the relay device by the network device. Please refer to the description of the foregoing method, and the detailed description is omitted herein.
In the relay device shown in fig. 11 and the network device shown in fig. 12, the processor and the memory may be combined into one processing means, and the processor is configured to execute the program code stored in the memory to implement the above functions. In particular, the memory may also be integrated into the processor or separate from the processor. The processor may correspond to the processing unit in fig. 10. The transceiver may correspond to the transceiving unit in fig. 10. The transceiver 1110 may include a receiver (or receiver, receiving circuitry) and/or a transmitter (or transmitter, transmitting circuitry). Wherein the receiver is for receiving signals and the transmitter is for transmitting signals.
In the present application, the processor may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, where the methods, steps, and logic blocks of the present application may be implemented or performed. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method in connection with the present application may be embodied directly in a hardware processor or in a combination of hardware and software modules in a processor.
In the present application, the memory may be a nonvolatile memory, such as a hard disk (HDD) or a Solid State Drive (SSD), or may be a volatile memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory in this application may also be circuitry or any other device capable of performing the function of storing program instructions and/or data.
The application also provides a processing device comprising a processor and a (communication) interface; the processor is configured to perform any of the methods described above.
It should be understood that the processing means described above may be one or more chips. For example, the processing device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated chip (application specific integrated circuit, ASIC), a system on chip (SoC), a central processing unit (central processor unit, CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), a microcontroller (micro controller unit, MCU), a programmable controller (programmable logic device, PLD) or other integrated chip.
According to the method provided herein, the present application also provides a computer program product comprising: computer program code which, when executed by one or more processors, causes an apparatus comprising the processor to perform the methods shown in fig. 3, 4, 7 to 9.
The technical solution provided in the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the present application are produced in whole or in part. The computer instructions may be stored in or transmitted from one computer-readable storage medium, which can be any available medium that can be accessed by a computer or a data storage device, such as a server, data center, etc., that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., digital video disc (digital video disc, DVD)), or a semiconductor medium, etc.
According to the method provided by the present application, there is also provided a computer readable storage medium storing program code which, when executed by one or more processors, causes an apparatus comprising the processor to perform the method shown in fig. 3, 4, 7 to 9.
According to the method provided by the application, the application further provides a system which comprises one or more relay devices. The system may further comprise one or more of the network devices described above. The system may further comprise the aforementioned terminal device.
In the several provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the above-described arrangements are merely illustrative, e.g., the division of the elements is merely a logical functional division, and there may be additional divisions of actual implementation, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of this solution.
It will be appreciated that in the embodiments of the present application, the relay device and/or the network device may perform some or all of the steps in the embodiments of the present application, these steps or operations are merely examples, and in the embodiments of the present application, other operations or variations of the various operations may also be performed. Furthermore, the various steps may be performed in a different order presented in accordance with embodiments of the present application, and it is possible that not all of the operations in the embodiments of the present application may be performed.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (17)
1. A method for signal relay forwarding, comprising:
the relay device receives first information from the network device, the first information being used to configure a first nominal gain and at least one gain adjustment parameter, the at least one gain adjustment parameter comprising a gain offset and/or a scaling factor;
the relay device receiving second information from the network device, the second information being indicative of one or more of the at least one gain adjustment parameters;
the relay equipment determines relay forwarding gain according to the first information and the second information;
and the relay equipment forwards the signal from the network equipment or the terminal equipment according to the relay forwarding gain.
2. The method of claim 1, wherein the at least one gain adjustment parameter comprises a gain offset, wherein the first information configures at least one gain offset, wherein the second information indicates a first gain offset of the at least one gain offset, and wherein the first gain offset is used to determine the relay forwarding gain.
3. The method according to claim 1 or 2, wherein the at least one gain adjustment parameter comprises a scaling factor, wherein the first information is configured with at least one scaling factor, wherein the second information is used to indicate a first scaling factor of the at least one scaling factor, and wherein a product of the first scaling factor and the first nominal gain is used to determine the relay forwarding gain.
4. The method according to claim 1, wherein the first information is used for configuring at least one gain adjustment parameter set, each gain adjustment parameter set comprising a gain offset and/or a scaling factor, the second information is used for indicating a first gain adjustment parameter set of the at least one gain adjustment parameter set,
the first gain adjustment parameter set comprises a first gain offset, and the first gain offset is used for determining the relay forwarding gain; and/or, the first gain adjustment parameter set includes a first scaling factor, and a product of the first scaling factor and the first nominal gain is used for determining the relay forwarding gain.
5. The method according to claim 4, wherein the first information is used to configure a first correspondence, at least one gain adjustment parameter set in the first correspondence corresponds to at least one relay beam, the gain adjustment parameter set includes a gain offset and/or a scaling factor, and the method further comprises:
the relay device determines a first gain adjustment parameter set corresponding to a first relay beam in the first correspondence, and the signal from the network device or the terminal device is forwarded through the first relay beam.
6. The method according to any one of claims 4 or 5, wherein the first information is used to configure a second correspondence, at least one gain adjustment parameter set in the second correspondence corresponds to at least one signal, the gain adjustment parameter set comprises a gain offset and/or a scaling factor, the at least one signal comprises an upstream signal and/or a downstream signal, and the method further comprises:
the relay device determines a first gain adjustment parameter set corresponding to a first signal in the second correspondence, where the signal from the network device or the terminal device is the first signal.
7. The method according to any one of claims 1 to 6, wherein the at least one gain adjustment parameter comprises an accumulation mode enable parameter for configuring an accumulation mode that enables or disables gain control adjustment amounts, the second information is for indicating a first gain control adjustment amount,
if the accumulation mode enabling parameter configuration enables the accumulation mode of the gain control adjustment quantity, the accumulation quantity of a plurality of gain control adjustment quantities is used for determining the relay forwarding gain, and the plurality of gain control adjustment quantities comprise the first gain control adjustment quantity; or,
And if the accumulation mode enabling parameter configuration does not enable the accumulation mode of the gain control adjustment quantity, the first gain control adjustment quantity is used for determining the relay forwarding gain.
8. The method of any of claims 1 to 7, wherein the at least one gain adjustment parameter comprises an error vector magnitude, EVM, gain adjustment amount enable parameter, the EVM gain adjustment amount enable parameter being used to configure enable or disable EVM gain adjustment amounts.
9. The method of claim 8, wherein the EVM gain adjustment amount enable parameter configuration enables EVM gain adjustment, wherein the second information is used to indicate a first EVM gain adjustment amount used to determine the relay forwarding gain.
10. The method of claim 8, wherein the EVM gain adjustment amount enable parameter configuration enables EVM gain adjustment, and wherein the method further comprises:
the relay device determines a first EVM gain adjustment amount corresponding to a modulation mode of the signal from the network device or the terminal device;
wherein the first EVM gain adjustment amount is used to determine the relay forwarding gain.
11. The method according to any one of claims 1 to 7, wherein the at least one gain adjustment parameter comprises an upstream gain adjustment amount enable parameter for configuring enabling or disabling an upstream gain adjustment amount,
if the uplink gain adjustment amount enabling parameter configures the enabling uplink gain adjustment amount, the second information is used to indicate the first uplink gain adjustment amount,
and when the transmission beam adopted by the uplink relay forwarding and the reception beam adopted by the downlink relay forwarding are the same beam, and/or when the reception beam adopted by the uplink relay forwarding and the transmission beam adopted by the downlink relay forwarding are the same beam, the first uplink gain adjustment amount is used for determining the relay forwarding gain.
12. The method according to any one of claims 1 to 11, further comprising:
the relay device receives third information, wherein the third information is used for indicating a second nominal gain, and the second nominal gain is an updated nominal gain;
and the relay equipment determines relay forwarding gain according to the second nominal gain.
13. The method according to claim 12, characterized in that the first information is carried in a radio resource control, RRC, message and the third information is carried in a radio medium access control, MAC, control element, CE, or downlink control information, DCI.
14. A signal relay forwarding device, comprising:
a transceiver unit configured to receive first information from a network device, the first information being used to configure a first nominal gain and at least one gain adjustment parameter, the at least one gain adjustment parameter comprising a gain offset and/or a scaling factor;
the transceiver unit is further configured to receive second information from the network device, the second information being configured to indicate one or more gain adjustment parameters of the at least one gain adjustment parameter;
the processing unit is used for determining relay forwarding gain according to the first information and the second information;
the receiving and transmitting unit is further configured to forward a signal from the network device or the terminal device according to the relay forwarding gain.
15. A communication device, the communication device comprising a processor; the processor is configured to execute a computer program or computer instructions in a memory to perform the method of any of claims 1 to 13.
16. The communication device of claim 15, wherein the communication device further comprises the memory.
17. A computer readable storage medium, characterized in that a computer program is stored thereon, which, when being executed by a communication device, causes the communication device to perform the method of any of claims 1 to 13.
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| CN202210968703.8A CN117639877A (en) | 2022-08-12 | 2022-08-12 | Signal relay forwarding method and communication device |
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| CN202210968703.8A CN117639877A (en) | 2022-08-12 | 2022-08-12 | Signal relay forwarding method and communication device |
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